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Refactor code for API (#3)
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Co-authored-by: Mikael CAPELLE <mikael.capelle@thalesaleniaspace.com>
Co-authored-by: Mikaël Capelle <capelle.mikael@gmail.com>
Reviewed-on: #3
This commit is contained in:
Mikaël Capelle 2024-12-08 13:06:41 +00:00
parent 1caf93b38b
commit 87936d6422
130 changed files with 4599 additions and 3336 deletions
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16
poetry.lock generated
View File

@ -1245,6 +1245,20 @@ files = [
docs = ["myst-parser", "pydata-sphinx-theme", "sphinx"]
test = ["argcomplete (>=3.0.3)", "mypy (>=1.7.0)", "pre-commit", "pytest (>=7.0,<8.2)", "pytest-mock", "pytest-mypy-testing"]
[[package]]
name = "types-networkx"
version = "3.4.2.20241115"
description = "Typing stubs for networkx"
optional = false
python-versions = ">=3.8"
files = [
{file = "types-networkx-3.4.2.20241115.tar.gz", hash = "sha256:d669b650cf6c6c9ec879a825449eb04a5c10742f3109177e1683f57ee49e0f59"},
{file = "types_networkx-3.4.2.20241115-py3-none-any.whl", hash = "sha256:f0c382924d6614e06bf0b1ca0b837b8f33faa58982bc086ea762efaf39aa98dd"},
]
[package.dependencies]
numpy = ">=1.20"
[[package]]
name = "typing-extensions"
version = "4.12.2"
@ -1281,4 +1295,4 @@ files = [
[metadata]
lock-version = "2.0"
python-versions = "^3.10"
content-hash = "b643261f91a781d77735e05f6d2ac1002867600c2df6393a9d1a15f5e1189109"
content-hash = "c91bc307ff4a5b3e8cd1976ebea211c9749fe09d563dd80861f70ce26826cda9"

1
pyproject.toml
View File

@ -23,6 +23,7 @@ ruff = "^0.8.1"
poethepoet = "^0.31.1"
ipykernel = "^6.29.5"
networkx-stubs = "^0.0.1"
types-networkx = "^3.4.2.20241115"
[tool.poetry.scripts]
holt59-aoc = "holt59.aoc.__main__:main"

16
src/holt59/aoc/2015/day1.py
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@ -1,10 +1,12 @@
import sys
from typing import Any, Iterator
line = sys.stdin.read().strip()
floor = 0
floors = [(floor := floor + (1 if c == "(" else -1)) for c in line]
from ..base import BaseSolver
print(f"answer 1 is {floors[-1]}")
print(f"answer 2 is {floors.index(-1)}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
floor = 0
floors = [(floor := floor + (1 if c == "(" else -1)) for c in input]
yield floors[-1]
yield floors.index(-1)

29
src/holt59/aoc/2015/day10.py
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@ -1,7 +1,7 @@
import itertools
import sys
from typing import Any, Iterator
line = sys.stdin.read().strip()
from ..base import BaseSolver
# see http://www.se16.info/js/lands2.htm for the explanation of 'atoms' (or elements)
#
@ -9,7 +9,7 @@ line = sys.stdin.read().strip()
# CodeGolf answer https://codegolf.stackexchange.com/a/8479/42148
# fmt: off
atoms = [
ATOMS: list[tuple[str, tuple[int, ...]]] = [
("22", (0, )), # 0
("13112221133211322112211213322112", (71, 90, 0, 19, 2, )), # 1
("312211322212221121123222112", (1, )), # 2
@ -105,7 +105,7 @@ atoms = [
]
# fmt: on
starters = [
STARTERS = [
"1",
"11",
"21",
@ -122,27 +122,26 @@ def look_and_say_length(s: str, n: int) -> int:
if n == 0:
return len(s)
if s in starters:
if s in STARTERS:
return look_and_say_length(
"".join(f"{len(list(g))}{k}" for k, g in itertools.groupby(s)), n - 1
)
counts = {i: 0 for i in range(len(atoms))}
idx = next(i for i, (a, _) in enumerate(atoms) if s == a)
counts = {i: 0 for i in range(len(ATOMS))}
idx = next(i for i, (a, _) in enumerate(ATOMS) if s == a)
counts[idx] = 1
for _ in range(n):
c2 = {i: 0 for i in range(len(atoms))}
c2 = {i: 0 for i in range(len(ATOMS))}
for i in counts:
for j in atoms[i][1]:
for j in ATOMS[i][1]:
c2[j] += counts[i]
counts = c2
return sum(counts[i] * len(a[0]) for i, a in enumerate(atoms))
return sum(counts[i] * len(a[0]) for i, a in enumerate(ATOMS))
answer_1 = look_and_say_length(line, 40)
print(f"answer 1 is {answer_1}")
answer_2 = look_and_say_length(line, 50)
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any] | None:
yield look_and_say_length(input, 40)
yield look_and_say_length(input, 50)

16
src/holt59/aoc/2015/day11.py
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@ -1,5 +1,7 @@
import itertools
import sys
from typing import Any, Iterator
from ..base import BaseSolver
def is_valid(p: str) -> bool:
@ -40,10 +42,8 @@ def find_next_password(p: str) -> str:
return p
line = sys.stdin.read().strip()
answer_1 = find_next_password(line)
print(f"answer 1 is {answer_1}")
answer_2 = find_next_password(increment(answer_1))
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
answer_1 = find_next_password(input)
yield answer_1
yield find_next_password(increment(answer_1))

16
src/holt59/aoc/2015/day12.py
View File

@ -1,6 +1,7 @@
import json
import sys
from typing import TypeAlias
from typing import Any, Iterator, TypeAlias
from ..base import BaseSolver
JsonObject: TypeAlias = dict[str, "JsonObject"] | list["JsonObject"] | int | str
@ -18,10 +19,9 @@ def json_sum(value: JsonObject, ignore: str | None = None) -> int:
return 0
data: JsonObject = json.load(sys.stdin)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
data: JsonObject = json.loads(input)
answer_1 = json_sum(data)
print(f"answer 1 is {answer_1}")
answer_2 = json_sum(data, "red")
print(f"answer 2 is {answer_2}")
yield json_sum(data)
yield json_sum(data, "red")

23
src/holt59/aoc/2015/day13.py
View File

@ -1,10 +1,11 @@
import itertools
import sys
from collections import defaultdict
from typing import Literal, cast
from typing import Any, Iterator, Literal, cast
import parse # type: ignore
from ..base import BaseSolver
def max_change_in_happiness(happiness: dict[str, dict[str, int]]) -> int:
guests = list(happiness)
@ -17,10 +18,12 @@ def max_change_in_happiness(happiness: dict[str, dict[str, int]]) -> int:
)
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
happiness: dict[str, dict[str, int]] = defaultdict(dict)
for line in lines:
happiness: dict[str, dict[str, int]] = defaultdict(dict)
for line in lines:
u1, gain_or_loose, hap, u2 = cast(
tuple[str, Literal["gain", "lose"], int, str],
parse.parse( # type: ignore
@ -29,13 +32,9 @@ for line in lines:
)
happiness[u1][u2] = hap if gain_or_loose == "gain" else -hap
answer_1 = max_change_in_happiness(happiness)
print(f"answer 1 is {answer_1}")
for guest in list(happiness):
yield max_change_in_happiness(happiness)
for guest in list(happiness):
happiness["me"][guest] = 0
happiness[guest]["me"] = 0
answer_2 = max_change_in_happiness(happiness)
print(f"answer 2 is {answer_2}")
yield max_change_in_happiness(happiness)

37
src/holt59/aoc/2015/day14.py
View File

@ -1,9 +1,10 @@
import sys
from dataclasses import dataclass
from typing import Literal, cast
from typing import Any, Iterator, Literal, cast
import parse # type: ignore
from ..base import BaseSolver
@dataclass(frozen=True)
class Reindeer:
@ -13,10 +14,12 @@ class Reindeer:
rest_time: int
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
reindeers: list[Reindeer] = []
for line in lines:
reindeers: list[Reindeer] = []
for line in lines:
reindeer, speed, speed_time, rest_time = cast(
tuple[str, int, int, int],
parse.parse( # type: ignore
@ -26,18 +29,20 @@ for line in lines:
),
)
reindeers.append(
Reindeer(name=reindeer, speed=speed, fly_time=speed_time, rest_time=rest_time)
Reindeer(
name=reindeer, speed=speed, fly_time=speed_time, rest_time=rest_time
)
)
target = 1000 if len(reindeers) <= 2 else 2503
target = 1000 if len(reindeers) <= 2 else 2503
states: dict[Reindeer, tuple[Literal["resting", "flying"], int]] = {
states: dict[Reindeer, tuple[Literal["resting", "flying"], int]] = {
reindeer: ("resting", 0) for reindeer in reindeers
}
distances: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
points: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
}
distances: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
points: dict[Reindeer, int] = {reindeer: 0 for reindeer in reindeers}
for time in range(target):
for time in self.progress.wrap(range(target)):
for reindeer in reindeers:
if states[reindeer][0] == "flying":
distances[reindeer] += reindeer.speed
@ -54,9 +59,5 @@ for time in range(target):
else:
states[reindeer] = ("resting", time + reindeer.rest_time)
answer_1 = max(distances.values())
print(f"answer 1 is {answer_1}")
answer_2 = max(points.values()) - 1
print(f"answer 2 is {answer_2}")
yield max(distances.values())
yield max(points.values()) - 1

29
src/holt59/aoc/2015/day15.py
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@ -1,9 +1,10 @@
import math
import sys
from typing import Sequence, cast
from typing import Any, Iterator, Sequence, cast
import parse # type: ignore
from ..base import BaseSolver
def score(ingredients: list[list[int]], teaspoons: Sequence[int]) -> int:
return math.prod(
@ -18,10 +19,12 @@ def score(ingredients: list[list[int]], teaspoons: Sequence[int]) -> int:
)
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
ingredients: list[list[int]] = []
for line in lines:
ingredients: list[list[int]] = []
for line in lines:
_, *scores = cast(
tuple[str, int, int, int, int, int],
parse.parse( # type: ignore
@ -32,11 +35,11 @@ for line in lines:
)
ingredients.append(scores)
total_teaspoons = 100
calories: list[int] = []
scores: list[int] = []
total_teaspoons = 100
calories: list[int] = []
scores: list[int] = []
for a in range(total_teaspoons + 1):
for a in range(total_teaspoons + 1):
for b in range(total_teaspoons + 1 - a):
for c in range(total_teaspoons + 1 - a - b):
teaspoons = (a, b, c, total_teaspoons - a - b - c)
@ -49,9 +52,5 @@ for a in range(total_teaspoons + 1):
)
)
answer_1 = max(scores)
print(f"answer 1 is {answer_1}")
answer_2 = max(score for score, calory in zip(scores, calories) if calory == 500)
print(f"answer 2 is {answer_2}")
yield max(scores)
yield max(score for score, calory in zip(scores, calories) if calory == 500)

42
src/holt59/aoc/2015/day16.py
View File

@ -1,8 +1,9 @@
import operator as op
import re
import sys
from collections import defaultdict
from typing import Callable
from typing import Any, Callable, Iterator
from ..base import BaseSolver
MFCSAM: dict[str, int] = {
"children": 3,
@ -17,18 +18,10 @@ MFCSAM: dict[str, int] = {
"perfumes": 1,
}
lines = sys.stdin.readlines()
aunts: list[dict[str, int]] = [
{
match[1]: int(match[2])
for match in re.findall(R"((?P<compound>[^:, ]+): (?P<quantity>\d+))", line)
}
for line in lines
]
def match(operators: dict[str, Callable[[int, int], bool]]) -> int:
def match(
aunts: list[dict[str, int]], operators: dict[str, Callable[[int, int], bool]]
) -> int:
return next(
i
for i, aunt in enumerate(aunts, start=1)
@ -36,16 +29,29 @@ def match(operators: dict[str, Callable[[int, int], bool]]) -> int:
)
answer_1 = match(defaultdict(lambda: op.eq))
print(f"answer 1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
answer_2 = match(
aunts: list[dict[str, int]] = [
{
match[1]: int(match[2])
for match in re.findall(
R"((?P<compound>[^:, ]+): (?P<quantity>\d+))", line
)
}
for line in lines
]
yield match(aunts, defaultdict(lambda: op.eq))
yield match(
aunts,
defaultdict(
lambda: op.eq,
trees=op.gt,
cats=op.gt,
pomeranians=op.lt,
goldfish=op.lt,
),
)
)
print(f"answer 2 is {answer_2}")

26
src/holt59/aoc/2015/day17.py
View File

@ -1,5 +1,6 @@
import sys
from typing import Iterator
from typing import Any, Iterator
from ..base import BaseSolver
def iter_combinations(value: int, containers: list[int]) -> Iterator[tuple[int, ...]]:
@ -16,15 +17,18 @@ def iter_combinations(value: int, containers: list[int]) -> Iterator[tuple[int,
yield (containers[i],) + combination
containers = [int(c) for c in sys.stdin.read().split()]
total = 25 if len(containers) <= 5 else 150
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
containers = [int(c) for c in input.split()]
total = 25 if len(containers) <= 5 else 150
combinations = [combination for combination in iter_combinations(total, containers)]
combinations = [
combination for combination in iter_combinations(total, containers)
]
answer_1 = len(combinations)
print(f"answer 1 is {answer_1}")
yield len(combinations)
min_containers = min(len(combination) for combination in combinations)
answer_2 = sum(1 for combination in combinations if len(combination) == min_containers)
print(f"answer 2 is {answer_2}")
min_containers = min(len(combination) for combination in combinations)
yield sum(
1 for combination in combinations if len(combination) == min_containers
)

54
src/holt59/aoc/2015/day18.py
View File

@ -1,13 +1,18 @@
import itertools
import sys
from typing import Any, Iterator
import numpy as np
from numpy.typing import NDArray
grid0 = np.array([[c == "#" for c in line] for line in sys.stdin.read().splitlines()])
from ..base import BaseSolver
# add an always off circle around
grid0 = np.concatenate(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
grid0 = np.array([[c == "#" for c in line] for line in input.splitlines()])
# add an always off circle around
grid0 = np.concatenate(
[
np.zeros((grid0.shape[0] + 2, 1), dtype=bool),
np.concatenate(
@ -20,22 +25,21 @@ grid0 = np.concatenate(
np.zeros((grid0.shape[0] + 2, 1), dtype=bool),
],
axis=1,
)
)
moves = list(itertools.product([-1, 0, 1], repeat=2))
moves.remove((0, 0))
moves = list(itertools.product([-1, 0, 1], repeat=2))
moves.remove((0, 0))
jjs, iis = np.meshgrid(
jjs, iis = np.meshgrid(
np.arange(1, grid0.shape[0] - 1, dtype=int),
np.arange(1, grid0.shape[1] - 1, dtype=int),
)
iis, jjs = iis.flatten(), jjs.flatten()
)
iis, jjs = iis.flatten(), jjs.flatten()
ins = iis[:, None] + np.array(moves)[:, 0]
jns = jjs[:, None] + np.array(moves)[:, 1]
ins = iis[:, None] + np.array(moves)[:, 0]
jns = jjs[:, None] + np.array(moves)[:, 1]
def game_of_life(grid: NDArray[np.bool_]) -> NDArray[np.bool_]:
def game_of_life(grid: NDArray[np.bool_]) -> NDArray[np.bool_]:
neighbors_on = grid[ins, jns].sum(axis=1)
cells_on = grid[iis, jjs]
@ -44,23 +48,19 @@ def game_of_life(grid: NDArray[np.bool_]) -> NDArray[np.bool_]:
return grid
grid = grid0
n_steps = 4 if len(grid) < 10 else 100
for _ in range(n_steps):
grid = grid0
n_steps = 4 if len(grid) < 10 else 100
for _ in range(n_steps):
grid = game_of_life(grid)
answer_1 = grid.sum()
print(f"answer 1 is {answer_1}")
yield grid.sum()
n_steps = 5 if len(grid) < 10 else 100
grid = grid0
for _ in range(n_steps):
n_steps = 5 if len(grid) < 10 else 100
grid = grid0
for _ in range(n_steps):
grid[[1, 1, -2, -2], [1, -2, 1, -2]] = True
grid = game_of_life(grid)
grid[[1, 1, -2, -2], [1, -2, 1, -2]] = True
grid[[1, 1, -2, -2], [1, -2, 1, -2]] = True
answer_2 = sum(cell for line in grid for cell in line)
print(f"answer 2 is {answer_2}")
yield sum(cell for line in grid for cell in line)

40
src/holt59/aoc/2015/day19.py
View File

@ -1,37 +1,41 @@
import sys
from collections import defaultdict
from typing import Any, Iterator
replacements_s, molecule = sys.stdin.read().split("\n\n")
from ..base import BaseSolver
REPLACEMENTS: dict[str, list[str]] = defaultdict(list)
for replacement_s in replacements_s.splitlines():
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
replacements_s, molecule = input.split("\n\n")
REPLACEMENTS: dict[str, list[str]] = defaultdict(list)
for replacement_s in replacements_s.splitlines():
p = replacement_s.split(" => ")
REPLACEMENTS[p[0]].append(p[1])
molecule = molecule.strip()
molecule = molecule.strip()
generated = [
generated = [
molecule[:i] + replacement + molecule[i + len(symbol) :]
for symbol, replacements in REPLACEMENTS.items()
for replacement in replacements
for i in range(len(molecule))
if molecule[i:].startswith(symbol)
]
]
answer_1 = len(set(generated))
print(f"answer 1 is {answer_1}")
yield len(set(generated))
inversion: dict[str, str] = {
inversion: dict[str, str] = {
replacement: symbol
for symbol, replacements in REPLACEMENTS.items()
for replacement in replacements
}
}
# there is actually only one way to create the molecule, and we can greedily replace
# tokens with their replacements, e.g., if H => OH then we can replace OH by H directly
# without thinking
# there is actually only one way to create the molecule, and we can greedily replace
# tokens with their replacements, e.g., if H => OH then we can replace OH by H directly
# without thinking
count = 0
while molecule != "e":
count = 0
while molecule != "e":
i = 0
m2 = ""
while i < len(molecule):
@ -51,6 +55,4 @@ while molecule != "e":
# print(m2)
molecule = m2
answer_2 = count
print(f"answer 2 is {count}")
yield count

28
src/holt59/aoc/2015/day2.py
View File

@ -1,20 +1,24 @@
import sys
from typing import Any, Iterator
import numpy as np
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
length, width, height = np.array(
[[int(c) for c in line.split("x")] for line in lines]
).T
lw, wh, hl = (length * width, width * height, height * length)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
length, width, height = np.array(
[[int(c) for c in line.split("x")] for line in input.splitlines()]
).T
answer_1 = np.sum(2 * (lw + wh + hl) + np.min(np.stack([lw, wh, hl]), axis=0))
print(f"answer 1 is {answer_1}")
lw, wh, hl = (length * width, width * height, height * length)
answer_2 = np.sum(
yield np.sum(2 * (lw + wh + hl) + np.min(np.stack([lw, wh, hl]), axis=0))
yield np.sum(
length * width * height
+ 2 * np.min(np.stack([length + width, length + height, height + width]), axis=0)
)
print(f"answer 2 is {answer_2}")
+ 2
* np.min(
np.stack([length + width, length + height, height + width]), axis=0
)
)

15
src/holt59/aoc/2015/day20.py
View File

@ -1,10 +1,10 @@
import itertools
import sys
from typing import Any, Iterator
target = int(sys.stdin.read())
from ..base import BaseSolver
def presents(n: int, elf: int, max: int = target) -> int:
def presents(n: int, elf: int, max: int) -> int:
count = 0
k = 1
while k * k < n:
@ -21,8 +21,9 @@ def presents(n: int, elf: int, max: int = target) -> int:
return count
answer_1 = next(n for n in itertools.count(1) if presents(n, 10) >= target)
print(f"answer 1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
target = int(input)
answer_2 = next(n for n in itertools.count(1) if presents(n, 11, 50) >= target)
print(f"answer 2 is {answer_2}")
yield next(n for n in itertools.count(1) if presents(n, 10, target) >= target)
yield next(n for n in itertools.count(1) if presents(n, 11, 50) >= target)

30
src/holt59/aoc/2015/day21.py
View File

@ -1,7 +1,8 @@
import itertools
import sys
from math import ceil
from typing import TypeAlias
from typing import Any, Iterator, TypeAlias
from ..base import BaseSolver
Modifier: TypeAlias = tuple[str, int, int, int]
@ -33,17 +34,18 @@ RINGS: list[Modifier] = [
]
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
player_hp = 100
player_hp = 100
boss_attack = int(lines[1].split(":")[1].strip())
boss_armor = int(lines[2].split(":")[1].strip())
boss_hp = int(lines[0].split(":")[1].strip())
boss_attack = int(lines[1].split(":")[1].strip())
boss_armor = int(lines[2].split(":")[1].strip())
boss_hp = int(lines[0].split(":")[1].strip())
min_cost, max_cost = 1_000_000, 0
for equipments in itertools.product(WEAPONS, ARMORS, RINGS, RINGS):
min_cost, max_cost = 1_000_000, 0
for equipments in itertools.product(WEAPONS, ARMORS, RINGS, RINGS):
if equipments[-1][0] != "" and equipments[-2] == equipments[-1]:
continue
@ -58,9 +60,5 @@ for equipments in itertools.product(WEAPONS, ARMORS, RINGS, RINGS):
else:
max_cost = max(cost, max_cost)
answer_1 = min_cost
print(f"answer 1 is {answer_1}")
answer_2 = max_cost
print(f"answer 2 is {answer_2}")
yield min_cost
yield max_cost

61
src/holt59/aoc/2015/day22.py
View File

@ -1,8 +1,9 @@
from __future__ import annotations
import heapq
import sys
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
from ..base import BaseSolver
PlayerType: TypeAlias = Literal["player", "boss"]
SpellType: TypeAlias = Literal["magic missile", "drain", "shield", "poison", "recharge"]
@ -62,17 +63,6 @@ def play(
continue
visited.add((player, player_hp, player_mana, player_armor, boss_hp, buffs))
if hard_mode and player == "player":
player_hp = max(0, player_hp - 1)
if player_hp == 0:
continue
if boss_hp == 0:
winning_node = spells
continue
new_buffs: list[tuple[BuffType, int]] = []
for buff, length in buffs:
length = length - 1
@ -88,6 +78,16 @@ def play(
if length > 0:
new_buffs.append((buff, length))
if hard_mode and player == "player":
player_hp = player_hp - 1
if player_hp <= 0:
continue
if boss_hp <= 0:
winning_node = spells
continue
buffs = tuple(new_buffs)
if player == "boss":
@ -155,23 +155,28 @@ def play(
return winning_node
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
player_hp = 50
player_mana = 500
player_armor = 0
player_hp = 50
player_mana = 500
player_armor = 0
boss_hp = int(lines[0].split(":")[1].strip())
boss_attack = int(lines[1].split(":")[1].strip())
boss_hp = int(lines[0].split(":")[1].strip())
boss_attack = int(lines[1].split(":")[1].strip())
answer_1 = sum(
yield sum(
c
for _, c in play(player_hp, player_mana, player_armor, boss_hp, boss_attack, False)
)
print(f"answer 1 is {answer_1}")
for _, c in play(
player_hp, player_mana, player_armor, boss_hp, boss_attack, False
)
)
# 1242 (not working)
answer_2 = sum(
c for _, c in play(player_hp, player_mana, player_armor, boss_hp, boss_attack, True)
)
print(f"answer 2 is {answer_2}")
# 1242 (not working)
yield sum(
c
for _, c in play(
player_hp, player_mana, player_armor, boss_hp, boss_attack, True
)
)

13
src/holt59/aoc/2015/day3.py
View File

@ -1,7 +1,7 @@
import sys
from collections import defaultdict
from typing import Any, Iterator
line = sys.stdin.read().strip()
from ..base import BaseSolver
def process(directions: str) -> dict[tuple[int, int], int]:
@ -27,8 +27,7 @@ def process(directions: str) -> dict[tuple[int, int], int]:
return counts
answer_1 = len(process(line))
print(f"answer 1 is {answer_1}")
answer_2 = len(process(line[::2]) | process(line[1::2]))
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
yield len(process(input))
yield len(process(input[::2]) | process(input[1::2]))

26
src/holt59/aoc/2015/day4.py
View File

@ -1,16 +1,20 @@
import hashlib
import itertools
import sys
from typing import Any, Iterator
line = sys.stdin.read().strip()
from ..base import BaseSolver
it = iter(itertools.count(1))
answer_1 = next(
i for i in it if hashlib.md5(f"{line}{i}".encode()).hexdigest().startswith("00000")
)
print(f"answer 1 is {answer_1}")
answer_2 = next(
i for i in it if hashlib.md5(f"{line}{i}".encode()).hexdigest().startswith("000000")
)
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
it = iter(itertools.count(1))
yield next(
i
for i in it
if hashlib.md5(f"{input}{i}".encode()).hexdigest().startswith("00000")
)
yield next(
i
for i in it
if hashlib.md5(f"{input}{i}".encode()).hexdigest().startswith("000000")
)

16
src/holt59/aoc/2015/day5.py
View File

@ -1,4 +1,6 @@
import sys
from typing import Any, Iterator
from ..base import BaseSolver
VOWELS = "aeiou"
FORBIDDEN = {"ab", "cd", "pq", "xy"}
@ -27,10 +29,8 @@ def is_nice_2(s: str) -> bool:
return True
lines = sys.stdin.read().splitlines()
answer_1 = sum(map(is_nice_1, lines))
print(f"answer 1 is {answer_1}")
answer_2 = sum(map(is_nice_2, lines))
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
yield sum(map(is_nice_1, lines))
yield sum(map(is_nice_2, lines))

21
src/holt59/aoc/2015/day6.py
View File

@ -1,14 +1,16 @@
import sys
from typing import Literal, cast
from typing import Any, Iterator, Literal, cast
import numpy as np
import parse # type: ignore
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
lights_1 = np.zeros((1000, 1000), dtype=bool)
lights_2 = np.zeros((1000, 1000), dtype=int)
for line in lines:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lights_1 = np.zeros((1000, 1000), dtype=bool)
lights_2 = np.zeros((1000, 1000), dtype=int)
for line in input.splitlines():
action, sx, sy, ex, ey = cast(
tuple[Literal["turn on", "turn off", "toggle"], int, int, int, int],
parse.parse("{} {:d},{:d} through {:d},{:d}", line), # type: ignore
@ -26,8 +28,5 @@ for line in lines:
lights_1[sx:ex, sy:ey] = ~lights_1[sx:ex, sy:ey]
lights_2[sx:ex, sy:ey] += 2
answer_1 = lights_1.sum()
print(f"answer 1 is {answer_1}")
answer_2 = lights_2.sum()
print(f"answer 2 is {answer_2}")
yield lights_1.sum()
yield lights_2.sum()

57
src/holt59/aoc/2015/day7.py
View File

@ -1,11 +1,7 @@
import logging
import operator
import os
import sys
from typing import Callable
from typing import Any, Callable, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
OPERATORS = {
"AND": operator.and_,
@ -36,12 +32,27 @@ def value_of(key: str) -> tuple[str, Callable[[dict[str, int]], int]]:
return key, lambda values: values[key]
lines = sys.stdin.read().splitlines()
def process(
signals: Signals,
values: dict[str, int],
) -> dict[str, int]:
while signals:
signal = next(s for s in signals if all(p in values for p in signals[s][0]))
_, deps, command = signals[signal]
values[signal] = command(deps[0](values), deps[1](values)) % 65536
del signals[signal]
signals: Signals = {}
values: dict[str, int] = {"": 0}
return values
for line in lines:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any] | None:
lines = input.splitlines()
signals: Signals = {}
values: dict[str, int] = {"": 0}
for line in lines:
command, signal = line.split(" -> ")
if command.startswith("NOT"):
@ -77,25 +88,9 @@ for line in lines:
signals[signal] = ((lhs_s, rhs_s), (lhs_fn, rhs_fn), op)
values_1 = process(signals.copy(), values.copy())
for k in sorted(values_1):
self.logger.info(f"{k}: {values_1[k]}")
yield values_1["a"]
def process(
signals: Signals,
values: dict[str, int],
) -> dict[str, int]:
while signals:
signal = next(s for s in signals if all(p in values for p in signals[s][0]))
_, deps, command = signals[signal]
values[signal] = command(deps[0](values), deps[1](values)) % 65536
del signals[signal]
return values
values_1 = process(signals.copy(), values.copy())
logging.info("\n" + "\n".join(f"{k}: {values_1[k]}" for k in sorted(values_1)))
answer_1 = values_1["a"]
print(f"answer 1 is {answer_1}")
values_2 = process(signals.copy(), values | {"b": values_1["a"]})
answer_2 = values_2["a"]
print(f"answer 2 is {answer_2}")
yield process(signals.copy(), values | {"b": values_1["a"]})["a"]

21
src/holt59/aoc/2015/day8.py
View File

@ -1,14 +1,13 @@
import logging
import os
import sys
from typing import Any, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
answer_1 = sum(
yield sum(
# left and right quotes (not in memory)
2
# each \\ adds one character in the literals (compared to memory)
@ -20,10 +19,9 @@ answer_1 = sum(
# avoid \\\\x, etc., but this does not occur in the examples and the actual input
+ 3 * (line.count(R"\x") - line.count(R"\\x") + line.count(R"\\\x"))
for line in lines
)
print(f"answer 1 is {answer_1}")
)
answer_2 = sum(
yield sum(
# needs to wrap in quotes (2 characters)
2
# needs to escape every \ with an extra \
@ -31,5 +29,4 @@ answer_2 = sum(
# needs to escape every " with an extra \ (including the first and last ones)
+ line.count('"')
for line in lines
)
print(f"answer 2 is {answer_2}")
)

25
src/holt59/aoc/2015/day9.py
View File

@ -1,27 +1,28 @@
import itertools
import sys
from collections import defaultdict
from typing import cast
from typing import Any, Iterator, cast
import parse # type: ignore
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
distances: dict[str, dict[str, int]] = defaultdict(dict)
for line in lines:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
distances: dict[str, dict[str, int]] = defaultdict(dict)
for line in lines:
origin, destination, length = cast(
tuple[str, str, int],
parse.parse("{} to {} = {:d}", line), # type: ignore
)
distances[origin][destination] = distances[destination][origin] = length
distance_of_routes = {
distance_of_routes = {
route: sum(distances[o][d] for o, d in zip(route[:-1], route[1:]))
for route in map(tuple, itertools.permutations(distances))
}
}
answer_1 = min(distance_of_routes.values())
print(f"answer 1 is {answer_1}")
answer_2 = max(distance_of_routes.values())
print(f"answer 2 is {answer_2}")
yield min(distance_of_routes.values())
yield max(distance_of_routes.values())

23
src/holt59/aoc/2021/day1.py
View File

@ -1,14 +1,17 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
values = [int(line) for line in lines]
# part 1
answer_1 = sum(v2 > v1 for v1, v2 in zip(values[:-1], values[1:]))
print(f"answer 1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# part 2
runnings = [sum(values[i : i + 3]) for i in range(len(values) - 2)]
answer_2 = sum(v2 > v1 for v1, v2 in zip(runnings[:-1], runnings[1:]))
print(f"answer 2 is {answer_2}")
values = [int(line) for line in lines]
# part 1
yield sum(v2 > v1 for v1, v2 in zip(values[:-1], values[1:]))
# part 2
runnings = [sum(values[i : i + 3]) for i in range(len(values) - 2)]
yield sum(v2 > v1 for v1, v2 in zip(runnings[:-1], runnings[1:]))

12
src/holt59/aoc/2021/day10.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day11.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day12.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day13.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day14.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day15.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day16.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day17.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day18.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day19.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

27
src/holt59/aoc/2021/day2.py
View File

@ -1,17 +1,20 @@
import sys
from math import prod
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
Command: TypeAlias = Literal["forward", "up", "down"]
commands: list[tuple[Command, int]] = [
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
commands: list[tuple[Command, int]] = [
(cast(Command, (p := line.split())[0]), int(p[1])) for line in lines
]
]
def depth_and_position(use_aim: bool):
def depth_and_position(use_aim: bool):
aim, pos, depth = 0, 0, 0
for command, value in commands:
d_depth = 0
@ -31,11 +34,5 @@ def depth_and_position(use_aim: bool):
return depth, pos
# part 1
answer_1 = prod(depth_and_position(False))
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = prod(depth_and_position(True))
print(f"answer 2 is {answer_2}")
yield prod(depth_and_position(False))
yield prod(depth_and_position(True))

12
src/holt59/aoc/2021/day20.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day21.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day22.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day23.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day24.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

12
src/holt59/aoc/2021/day25.py
View File

@ -1,11 +1,7 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# part 1
answer_1 = ...
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]: ...

36
src/holt59/aoc/2021/day3.py
View File

@ -1,6 +1,7 @@
import sys
from collections import Counter
from typing import Literal
from typing import Any, Iterator, Literal
from ..base import BaseSolver
def generator_rating(
@ -20,20 +21,23 @@ def generator_rating(
return values[0]
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# part 1
most_and_least_common = [
tuple(Counter(line[col] for line in lines).most_common(2)[m][0] for m in range(2))
# part 1
most_and_least_common = [
tuple(
Counter(line[col] for line in lines).most_common(2)[m][0]
for m in range(2)
)
for col in range(len(lines[0]))
]
gamma_rate = int("".join(most for most, _ in most_and_least_common), base=2)
epsilon_rate = int("".join(least for _, least in most_and_least_common), base=2)
print(f"answer 1 is {gamma_rate * epsilon_rate}")
]
gamma_rate = int("".join(most for most, _ in most_and_least_common), base=2)
epsilon_rate = int("".join(least for _, least in most_and_least_common), base=2)
yield gamma_rate * epsilon_rate
# part 2
oxygen_generator_rating = int(generator_rating(lines, True, "1"), base=2)
co2_scrubber_rating = int(generator_rating(lines, False, "0"), base=2)
answer_2 = oxygen_generator_rating * co2_scrubber_rating
print(f"answer 2 is {answer_2}")
# part 2
oxygen_generator_rating = int(generator_rating(lines, True, "1"), base=2)
co2_scrubber_rating = int(generator_rating(lines, False, "0"), base=2)
yield oxygen_generator_rating * co2_scrubber_rating

39
src/holt59/aoc/2021/day4.py
View File

@ -1,23 +1,28 @@
import sys
from typing import Any, Iterator
import numpy as np
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
numbers = [int(c) for c in lines[0].split(",")]
boards = np.asarray(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
numbers = [int(c) for c in lines[0].split(",")]
boards = np.asarray(
[
[[int(c) for c in line.split()] for line in lines[start : start + 5]]
for start in range(2, len(lines), 6)
]
)
)
# (round, score) for each board (-1 when not found)
winning_rounds: list[tuple[int, int]] = [(-1, -1) for _ in range(len(boards))]
marked = np.zeros_like(boards, dtype=bool)
# (round, score) for each board (-1 when not found)
winning_rounds: list[tuple[int, int]] = [(-1, -1) for _ in range(len(boards))]
marked = np.zeros_like(boards, dtype=bool)
for round, number in enumerate(numbers):
for round, number in enumerate(numbers):
# mark boards
marked[boards == number] = True
@ -26,7 +31,9 @@ for round, number in enumerate(numbers):
if winning_rounds[index][0] > 0:
continue
if np.any(np.all(marked[index], axis=0) | np.all(marked[index], axis=1)):
if np.any(
np.all(marked[index], axis=0) | np.all(marked[index], axis=1)
):
winning_rounds[index] = (
round,
number * int(np.sum(boards[index][~marked[index]])),
@ -36,10 +43,10 @@ for round, number in enumerate(numbers):
if np.all(marked.all(axis=1) | marked.all(axis=2)):
break
# part 1
(_, score) = min(winning_rounds, key=lambda w: w[0])
print(f"answer 1 is {score}")
# part 1
(_, score) = min(winning_rounds, key=lambda w: w[0])
yield score
# part 2
(_, score) = max(winning_rounds, key=lambda w: w[0])
print(f"answer 2 is {score}")
# part 2
(_, score) = max(winning_rounds, key=lambda w: w[0])
yield score

34
src/holt59/aoc/2021/day5.py
View File

@ -1,10 +1,15 @@
import sys
from typing import Any, Iterator
import numpy as np
lines: list[str] = sys.stdin.read().splitlines()
from ..base import BaseSolver
sections: list[tuple[tuple[int, int], tuple[int, int]]] = [
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
sections: list[tuple[tuple[int, int], tuple[int, int]]] = [
(
(
int(line.split(" -> ")[0].split(",")[0]),
@ -16,21 +21,19 @@ sections: list[tuple[tuple[int, int], tuple[int, int]]] = [
),
)
for line in lines
]
]
np_sections = np.array(sections).reshape(-1, 4)
np_sections = np.array(sections).reshape(-1, 4)
x_min, x_max, y_min, y_max = (
min(np_sections[:, 0].min(), np_sections[:, 2].min()),
x_max, y_max = (
max(np_sections[:, 0].max(), np_sections[:, 2].max()),
min(np_sections[:, 1].min(), np_sections[:, 3].min()),
max(np_sections[:, 1].max(), np_sections[:, 3].max()),
)
)
counts_1 = np.zeros((y_max + 1, x_max + 1), dtype=int)
counts_2 = counts_1.copy()
counts_1 = np.zeros((y_max + 1, x_max + 1), dtype=int)
counts_2 = counts_1.copy()
for (x1, y1), (x2, y2) in sections:
for (x1, y1), (x2, y2) in sections:
x_rng = range(x1, x2 + 1, 1) if x2 >= x1 else range(x1, x2 - 1, -1)
y_rng = range(y1, y2 + 1, 1) if y2 >= y1 else range(y1, y2 - 1, -1)
@ -41,8 +44,5 @@ for (x1, y1), (x2, y2) in sections:
for i, j in zip(y_rng, x_rng):
counts_2[i, j] += 1
answer_1 = (counts_1 >= 2).sum()
print(f"answer 1 is {answer_1}")
answer_2 = (counts_2 >= 2).sum()
print(f"answer 2 is {answer_2}")
yield (counts_1 >= 2).sum()
yield (counts_2 >= 2).sum()

26
src/holt59/aoc/2021/day6.py
View File

@ -1,21 +1,21 @@
import sys
from typing import Any, Iterator
values = [int(c) for c in sys.stdin.read().strip().split(",")]
from ..base import BaseSolver
days = 256
lanterns = {day: 0 for day in range(days)}
for value in values:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
values = [int(c) for c in input.split(",")]
days = 256
lanterns = {day: 0 for day in range(days)}
for value in values:
for day in range(value, days, 7):
lanterns[day] += 1
for day in range(days):
for day in range(days):
for day2 in range(day + 9, days, 7):
lanterns[day2] += lanterns[day]
# part 1
answer_1 = sum(v for k, v in lanterns.items() if k < 80) + len(values)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = sum(lanterns.values()) + len(values)
print(f"answer 2 is {answer_2}")
yield sum(v for k, v in lanterns.items() if k < 80) + len(values)
yield sum(lanterns.values()) + len(values)

25
src/holt59/aoc/2021/day7.py
View File

@ -1,19 +1,22 @@
import sys
from typing import Any, Iterator
positions = [int(c) for c in sys.stdin.read().strip().split(",")]
from ..base import BaseSolver
min_position, max_position = min(positions), max(positions)
# part 1
answer_1 = min(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
positions = [int(c) for c in input.split(",")]
min_position, max_position = min(positions), max(positions)
# part 1
yield min(
sum(abs(p - position) for p in positions)
for position in range(min_position, max_position + 1)
)
print(f"answer 1 is {answer_1}")
)
# part 2
answer_2 = min(
# part 2
yield min(
sum(abs(p - position) * (abs(p - position) + 1) // 2 for p in positions)
for position in range(min_position, max_position + 1)
)
print(f"answer 2 is {answer_2}")
)

40
src/holt59/aoc/2021/day8.py
View File

@ -1,8 +1,7 @@
import itertools
import os
import sys
from typing import Any, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
from ..base import BaseSolver
digits = {
"abcefg": 0,
@ -17,19 +16,23 @@ digits = {
"abcdfg": 9,
}
lines = sys.stdin.read().splitlines()
# part 1
lengths = {len(k) for k, v in digits.items() if v in (1, 4, 7, 8)}
answer_1 = sum(
len(p) in lengths for line in lines for p in line.split("|")[1].strip().split()
)
print(f"answer 1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# part 2
values: list[int] = []
# part 1
lengths = {len(k) for k, v in digits.items() if v in (1, 4, 7, 8)}
yield sum(
len(p) in lengths
for line in lines
for p in line.split("|")[1].strip().split()
)
for line in lines:
# part 2
values: list[int] = []
for line in lines:
parts = line.split("|")
broken_digits = sorted(parts[0].strip().split(), key=len)
@ -49,7 +52,9 @@ for line in lines:
bd = [u for u in per_length[4][0] if u not in cf]
# the 3 digits of length 5 have a, d and g in common
adg = [u for u in per_length[5][0] if all(u in pe for pe in per_length[5][1:])]
adg = [
u for u in per_length[5][0] if all(u in pe for pe in per_length[5][1:])
]
# we can remove a
dg = [u for u in adg if u != a]
@ -77,11 +82,8 @@ for line in lines:
digit = "".join(sorted(mapping[c] for c in number))
value = 10 * value + digits[digit]
if VERBOSE:
print(value)
self.logger.info(f"value for '{line}' is {value}")
values.append(value)
answer_2 = sum(values)
print(f"answer 2 is {answer_2}")
yield sum(values)

35
src/holt59/aoc/2021/day9.py
View File

@ -1,18 +1,18 @@
import sys
from math import prod
from typing import Any, Iterator
values = [[int(c) for c in row] for row in sys.stdin.read().splitlines()]
n_rows, n_cols = len(values), len(values[0])
from ..base import BaseSolver
def neighbors(point: tuple[int, int]):
def neighbors(point: tuple[int, int], n_rows: int, n_cols: int):
i, j = point
for di, dj in ((-1, 0), (+1, 0), (0, -1), (0, +1)):
if 0 <= i + di < n_rows and 0 <= j + dj < n_cols:
yield (i + di, j + dj)
def basin(start: tuple[int, int]) -> set[tuple[int, int]]:
def basin(values: list[list[int]], start: tuple[int, int]) -> set[tuple[int, int]]:
n_rows, n_cols = len(values), len(values[0])
visited: set[tuple[int, int]] = set()
queue = [start]
@ -23,22 +23,25 @@ def basin(start: tuple[int, int]) -> set[tuple[int, int]]:
continue
visited.add((i, j))
queue.extend(neighbors((i, j)))
queue.extend(neighbors((i, j), n_rows, n_cols))
return visited
low_points = [
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
values = [[int(c) for c in row] for row in input.splitlines()]
n_rows, n_cols = len(values), len(values[0])
low_points = [
(i, j)
for i in range(n_rows)
for j in range(n_cols)
if all(values[ti][tj] > values[i][j] for ti, tj in neighbors((i, j)))
]
if all(
values[ti][tj] > values[i][j]
for ti, tj in neighbors((i, j), n_rows, n_cols)
)
]
# part 1
answer_1 = sum(values[i][j] + 1 for i, j in low_points)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = prod(sorted(len(basin(point)) for point in low_points)[-3:])
print(f"answer 2 is {answer_2}")
yield sum(values[i][j] + 1 for i, j in low_points)
yield prod(sorted(len(basin(values, point)) for point in low_points)[-3:])

15
src/holt59/aoc/2022/day1.py
View File

@ -1,7 +1,12 @@
import sys
from typing import Any, Iterator
blocks = sys.stdin.read().split("\n\n")
values = sorted(sum(map(int, block.split())) for block in blocks)
from ..base import BaseSolver
print(f"answer 1 is {values[-1]}")
print(f"answer 2 is {sum(values[-3:])}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
blocks = input.split("\n\n")
values = sorted(sum(map(int, block.split())) for block in blocks)
yield values[-1]
yield sum(values[-3:])

43
src/holt59/aoc/2022/day10.py
View File

@ -1,13 +1,16 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
cycle = 1
x = 1
values = {cycle: x}
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
for line in lines:
cycle, x = 1, 1
values = {cycle: x}
for line in lines:
cycle += 1
if line == "noop":
@ -22,17 +25,19 @@ for line in lines:
values[cycle] = x
answer_1 = sum(c * values[c] for c in range(20, max(values.keys()) + 1, 40))
print(f"answer 1 is {answer_1}")
answer_1 = sum(c * values[c] for c in range(20, max(values.keys()) + 1, 40))
yield answer_1
for i in range(6):
for j in range(40):
v = values[1 + i * 40 + j]
if j >= v - 1 and j <= v + 1:
print("#", end="")
else:
print(".", end="")
print()
yield (
"\n"
+ "\n".join(
"".join(
"#"
if j >= (v := values[1 + i * 40 + j]) - 1 and j <= v + 1
else "."
for j in range(40)
)
for i in range(6)
)
+ "\n"
)

45
src/holt59/aoc/2022/day11.py
View File

@ -1,7 +1,8 @@
import copy
import sys
from functools import reduce
from typing import Callable, Final, Mapping, Sequence
from typing import Any, Callable, Final, Iterator, Mapping, Sequence
from ..base import BaseSolver
class Monkey:
@ -119,24 +120,28 @@ def monkey_business(inspects: dict[Monkey, int]) -> int:
return sorted_levels[-2] * sorted_levels[-1]
monkeys = [parse_monkey(block.splitlines()) for block in sys.stdin.read().split("\n\n")]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
monkeys = [parse_monkey(block.splitlines()) for block in input.split("\n\n")]
# case 1: we simply divide the worry by 3 after applying the monkey worry operation
answer_1 = monkey_business(
# case 1: we simply divide the worry by 3 after applying the monkey worry operation
yield monkey_business(
run(copy.deepcopy(monkeys), 20, me_worry_fn=lambda w: w // 3)
)
print(f"answer 1 is {answer_1}")
)
# case 2: to keep reasonable level values, we can use a modulo operation, we need to
# use the product of all "divisible by" test so that the test remains valid
#
# (a + b) % c == ((a % c) + (b % c)) % c --- this would work for a single test value
#
# (a + b) % c == ((a % d) + (b % d)) % c --- if d is a multiple of c, which is why here
# we use the product of all test value
#
total_test_value = reduce(lambda w, m: w * m.test_value, monkeys, 1)
answer_2 = monkey_business(
run(copy.deepcopy(monkeys), 10_000, me_worry_fn=lambda w: w % total_test_value)
)
print(f"answer 2 is {answer_2}")
# case 2: to keep reasonable level values, we can use a modulo operation, we need to
# use the product of all "divisible by" test so that the test remains valid
#
# (a + b) % c == ((a % c) + (b % c)) % c --- this would work for a single test value
#
# (a + b) % c == ((a % d) + (b % d)) % c --- if d is a multiple of c, which is why here
# we use the product of all test value
#
total_test_value = reduce(lambda w, m: w * m.test_value, monkeys, 1)
yield monkey_business(
run(
copy.deepcopy(monkeys),
10_000,
me_worry_fn=lambda w: w % total_test_value,
)
)

109
src/holt59/aoc/2022/day12.py
View File

@ -1,6 +1,7 @@
import heapq
import sys
from typing import Callable, Iterator, TypeVar
from typing import Any, Callable, Iterator, TypeVar
from ..base import BaseSolver
Node = TypeVar("Node")
@ -68,30 +69,6 @@ def make_path(parents: dict[Node, Node], start: Node, end: Node) -> list[Node] |
return list(reversed(path))
def print_path(path: list[tuple[int, int]], n_rows: int, n_cols: int) -> None:
end = path[-1]
graph = [["." for _c in range(n_cols)] for _r in range(n_rows)]
graph[end[0]][end[1]] = "E"
for i in range(0, len(path) - 1):
cr, cc = path[i]
nr, nc = path[i + 1]
if cr == nr and nc == cc - 1:
graph[cr][cc] = "<"
elif cr == nr and nc == cc + 1:
graph[cr][cc] = ">"
elif cr == nr - 1 and nc == cc:
graph[cr][cc] = "v"
elif cr == nr + 1 and nc == cc:
graph[cr][cc] = "^"
else:
assert False, "{} -> {} infeasible".format(path[i], path[i + 1])
print("\n".join("".join(row) for row in graph))
def neighbors(
grid: list[list[int]], node: tuple[int, int], up: bool
) -> Iterator[tuple[int, int]]:
@ -118,17 +95,44 @@ def neighbors(
# === main code ===
lines = sys.stdin.read().splitlines()
grid = [[ord(cell) - ord("a") for cell in line] for line in lines]
class Solver(BaseSolver):
def print_path(self, path: list[tuple[int, int]], n_rows: int, n_cols: int) -> None:
end = path[-1]
start: tuple[int, int] | None = None
end: tuple[int, int] | None = None
graph = [["." for _c in range(n_cols)] for _r in range(n_rows)]
graph[end[0]][end[1]] = "E"
# for part 2
start_s: list[tuple[int, int]] = []
for i in range(0, len(path) - 1):
cr, cc = path[i]
nr, nc = path[i + 1]
for i_row, row in enumerate(grid):
if cr == nr and nc == cc - 1:
graph[cr][cc] = "<"
elif cr == nr and nc == cc + 1:
graph[cr][cc] = ">"
elif cr == nr - 1 and nc == cc:
graph[cr][cc] = "v"
elif cr == nr + 1 and nc == cc:
graph[cr][cc] = "^"
else:
assert False, "{} -> {} infeasible".format(path[i], path[i + 1])
for row in graph:
self.logger.info("".join(row))
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
grid = [[ord(cell) - ord("a") for cell in line] for line in lines]
start: tuple[int, int] | None = None
end: tuple[int, int] | None = None
# for part 2
start_s: list[tuple[int, int]] = []
for i_row, row in enumerate(grid):
for i_col, col in enumerate(row):
if chr(col + ord("a")) == "S":
start = (i_row, i_col)
@ -138,26 +142,27 @@ for i_row, row in enumerate(grid):
elif col == 0:
start_s.append((i_row, i_col))
assert start is not None
assert end is not None
assert start is not None
assert end is not None
# fix values
grid[start[0]][start[1]] = 0
grid[end[0]][end[1]] = ord("z") - ord("a")
# fix values
grid[start[0]][start[1]] = 0
grid[end[0]][end[1]] = ord("z") - ord("a")
lengths_1, parents_1 = dijkstra(
start=start,
neighbors=lambda n: neighbors(grid, n, True),
cost=lambda lhs, rhs: 1,
)
path_1 = make_path(parents_1, start, end)
assert path_1 is not None
lengths_1, parents_1 = dijkstra(
start=start, neighbors=lambda n: neighbors(grid, n, True), cost=lambda lhs, rhs: 1
)
path_1 = make_path(parents_1, start, end)
assert path_1 is not None
self.print_path(path_1, n_rows=len(grid), n_cols=len(grid[0]))
yield lengths_1[end] - 1
print_path(path_1, n_rows=len(grid), n_cols=len(grid[0]))
print(f"answer 1 is {lengths_1[end] - 1}")
lengths_2, parents_2 = dijkstra(
start=end, neighbors=lambda n: neighbors(grid, n, False), cost=lambda lhs, rhs: 1
)
answer_2 = min(lengths_2.get(start, float("inf")) for start in start_s)
print(f"answer 2 is {answer_2}")
lengths_2, _ = dijkstra(
start=end,
neighbors=lambda n: neighbors(grid, n, False),
cost=lambda lhs, rhs: 1,
)
yield min(lengths_2.get(start, float("inf")) for start in start_s)

27
src/holt59/aoc/2022/day13.py
View File

@ -1,11 +1,8 @@
import json
import sys
from functools import cmp_to_key
from typing import TypeAlias, cast
from typing import Any, Iterator, TypeAlias, cast
blocks = sys.stdin.read().strip().split("\n\n")
pairs = [tuple(json.loads(p) for p in block.split("\n")) for block in blocks]
from ..base import BaseSolver
Packet: TypeAlias = list[int | list["Packet"]]
@ -28,14 +25,18 @@ def compare(lhs: Packet, rhs: Packet) -> int:
return len(rhs) - len(lhs)
answer_1 = sum(i + 1 for i, (lhs, rhs) in enumerate(pairs) if compare(lhs, rhs) > 0)
print(f"answer_1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
blocks = input.split("\n\n")
pairs = [tuple(json.loads(p) for p in block.split("\n")) for block in blocks]
dividers = [[[2]], [[6]]]
yield sum(i + 1 for i, (lhs, rhs) in enumerate(pairs) if compare(lhs, rhs) > 0)
packets = [packet for packets in pairs for packet in packets]
packets.extend(dividers)
packets = list(reversed(sorted(packets, key=cmp_to_key(compare))))
dividers = [[[2]], [[6]]]
d_index = [packets.index(d) + 1 for d in dividers]
print(f"answer 2 is {d_index[0] * d_index[1]}")
packets = [packet for packets in pairs for packet in packets]
packets.extend(dividers)
packets = list(reversed(sorted(packets, key=cmp_to_key(compare))))
d_index = [packets.index(d) + 1 for d in dividers]
yield d_index[0] * d_index[1]

97
src/holt59/aoc/2022/day14.py
View File

@ -1,6 +1,7 @@
import sys
from enum import Enum, auto
from typing import Callable, cast
from typing import Any, Callable, Iterator, cast
from ..base import BaseSolver
class Cell(Enum):
@ -12,26 +13,6 @@ class Cell(Enum):
return {Cell.AIR: ".", Cell.ROCK: "#", Cell.SAND: "O"}[self]
def print_blocks(blocks: dict[tuple[int, int], Cell]):
"""
Print the given set of blocks on a grid.
Args:
blocks: Set of blocks to print.
"""
x_min, y_min, x_max, y_max = (
min(x for x, _ in blocks),
0,
max(x for x, _ in blocks),
max(y for _, y in blocks),
)
for y in range(y_min, y_max + 1):
print(
"".join(str(blocks.get((x, y), Cell.AIR)) for x in range(x_min, x_max + 1))
)
def flow(
blocks: dict[tuple[int, int], Cell],
stop_fn: Callable[[int, int], bool],
@ -84,21 +65,46 @@ def flow(
# === inputs ===
lines = sys.stdin.read().splitlines()
paths: list[list[tuple[int, int]]] = []
for line in lines:
class Solver(BaseSolver):
def print_blocks(self, blocks: dict[tuple[int, int], Cell]):
"""
Print the given set of blocks on a grid.
Args:
blocks: Set of blocks to print.
"""
x_min, y_min, x_max, y_max = (
min(x for x, _ in blocks),
0,
max(x for x, _ in blocks),
max(y for _, y in blocks),
)
for y in range(y_min, y_max + 1):
self.logger.info(
"".join(
str(blocks.get((x, y), Cell.AIR)) for x in range(x_min, x_max + 1)
)
)
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
paths: list[list[tuple[int, int]]] = []
for line in lines:
parts = line.split(" -> ")
paths.append(
[
cast(tuple[int, int], tuple(int(c.strip()) for c in part.split(",")))
cast(
tuple[int, int], tuple(int(c.strip()) for c in part.split(","))
)
for part in parts
]
)
blocks: dict[tuple[int, int], Cell] = {}
for path in paths:
blocks: dict[tuple[int, int], Cell] = {}
for path in paths:
for start, end in zip(path[:-1], path[1:]):
x_start = min(start[0], end[0])
x_end = max(start[0], end[0]) + 1
@ -109,32 +115,25 @@ for path in paths:
for y in range(y_start, y_end):
blocks[x, y] = Cell.ROCK
print_blocks(blocks)
print()
self.print_blocks(blocks)
x_min, y_min, x_max, y_max = (
min(x for x, _ in blocks),
0,
max(x for x, _ in blocks),
max(y for _, y in blocks),
)
y_max = max(y for _, y in blocks)
# === part 1 ===
# === part 1 ===
blocks_1 = flow(
blocks_1 = flow(
blocks.copy(), stop_fn=lambda x, y: y > y_max, fill_fn=lambda x, y: Cell.AIR
)
print_blocks(blocks_1)
print(f"answer 1 is {sum(v == Cell.SAND for v in blocks_1.values())}")
print()
)
self.print_blocks(blocks_1)
yield sum(v == Cell.SAND for v in blocks_1.values())
# === part 2 ===
# === part 2 ===
blocks_2 = flow(
blocks_2 = flow(
blocks.copy(),
stop_fn=lambda x, y: x == 500 and y == 0,
fill_fn=lambda x, y: Cell.AIR if y < y_max + 2 else Cell.ROCK,
)
blocks_2[500, 0] = Cell.SAND
print_blocks(blocks_2)
print(f"answer 2 is {sum(v == Cell.SAND for v in blocks_2.values())}")
)
blocks_2[500, 0] = Cell.SAND
self.print_blocks(blocks_2)
yield sum(v == Cell.SAND for v in blocks_2.values())

57
src/holt59/aoc/2022/day15.py
View File

@ -1,12 +1,17 @@
import sys
from typing import Any
import itertools as it
from typing import Any, Iterator
import numpy as np
import parse # type: ignore
from numpy.typing import NDArray
from ..base import BaseSolver
def part1(sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], row: int) -> int:
class Solver(BaseSolver):
def part1(
self, sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], row: int
) -> int:
no_beacons_row_l: list[NDArray[np.floating[Any]]] = []
for (sx, sy), (bx, by) in sensor_to_beacon.items():
@ -16,17 +21,14 @@ def part1(sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], row: int) ->
no_beacons_row_l.append(sx + np.arange(0, d - abs(sy - row) + 1)) # type: ignore
beacons_at_row = set(bx for (bx, by) in sensor_to_beacon.values() if by == row)
no_beacons_row = set(np.concatenate(no_beacons_row_l)).difference(beacons_at_row) # type: ignore
no_beacons_row = set(it.chain(*no_beacons_row_l)).difference(beacons_at_row) # type: ignore
return len(no_beacons_row)
def part2_intervals(
sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], xy_max: int
) -> tuple[int, int, int]:
from tqdm import trange
for y in trange(xy_max + 1):
def part2_intervals(
self, sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], xy_max: int
) -> tuple[int, int, int]:
for y in self.progress.wrap(range(xy_max + 1)):
its: list[tuple[int, int]] = []
for (sx, sy), (bx, by) in sensor_to_beacon.items():
d = abs(sx - bx) + abs(sy - by)
@ -46,10 +48,9 @@ def part2_intervals(
return (0, 0, 0)
def part2_cplex(
sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], xy_max: int
) -> tuple[int, int, int]:
def part2_cplex(
self, sensor_to_beacon: dict[tuple[int, int], tuple[int, int]], xy_max: int
) -> tuple[int, int, int]:
from docplex.mp.model import Model
m = Model()
@ -58,7 +59,10 @@ def part2_cplex(
for (sx, sy), (bx, by) in sensor_to_beacon.items():
d = abs(sx - bx) + abs(sy - by)
m.add_constraint(m.abs(x - sx) + m.abs(y - sy) >= d + 1, ctname=f"ct_{sx}_{sy}") # type: ignore
m.add_constraint(
m.abs(x - sx) + m.abs(y - sy) >= d + 1, # type: ignore
ctname=f"ct_{sx}_{sy}",
)
m.set_objective("min", x + y)
@ -69,22 +73,23 @@ def part2_cplex(
vy = int(s.get_value(y))
return vx, vy, 4_000_000 * vx + vy
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
lines = sys.stdin.read().splitlines()
sensor_to_beacon: dict[tuple[int, int], tuple[int, int]] = {}
sensor_to_beacon: dict[tuple[int, int], tuple[int, int]] = {}
for line in lines:
for line in lines:
r: dict[str, str] = parse.parse( # type: ignore
"Sensor at x={sx}, y={sy}: closest beacon is at x={bx}, y={by}", line
)
sensor_to_beacon[int(r["sx"]), int(r["sy"])] = (int(r["bx"]), int(r["by"]))
xy_max = 4_000_000 if max(sensor_to_beacon) > (1_000, 0) else 20
row = 2_000_000 if max(sensor_to_beacon) > (1_000, 0) else 10
xy_max = 4_000_000 if max(sensor_to_beacon) > (1_000, 0) else 20
row = 2_000_000 if max(sensor_to_beacon) > (1_000, 0) else 10
print(f"answer 1 is {part1(sensor_to_beacon, row)}")
yield self.part1(sensor_to_beacon, row)
# x, y, a2 = part2_cplex(sensor_to_beacon, xy_max)
x, y, a2 = part2_intervals(sensor_to_beacon, xy_max)
print(f"answer 2 is {a2} (x={x}, y={y})")
# x, y, a2 = part2_cplex(sensor_to_beacon, xy_max)
x, y, a2 = self.part2_intervals(sensor_to_beacon, xy_max)
self.logger.info(f"answer 2 is {a2} (x={x}, y={y})")
yield a2

37
src/holt59/aoc/2022/day16.py
View File

@ -3,12 +3,13 @@ from __future__ import annotations
import heapq
import itertools
import re
import sys
from collections import defaultdict
from typing import FrozenSet, NamedTuple
from typing import Any, FrozenSet, Iterator, NamedTuple
from tqdm import tqdm
from ..base import BaseSolver
class Pipe(NamedTuple):
name: str
@ -36,8 +37,8 @@ def breadth_first_search(pipes: dict[str, Pipe], pipe: Pipe) -> dict[Pipe, int]:
Runs a BFS from the given pipe and return the shortest distance (in term of hops)
to all other pipes.
"""
queue = [(0, pipe_1)]
visited = set()
queue = [(0, pipe)]
visited: set[Pipe] = set()
distances: dict[Pipe, int] = {}
while len(distances) < len(pipes):
@ -122,11 +123,12 @@ def part_2(
# === MAIN ===
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
pipes: dict[str, Pipe] = {}
for line in lines:
pipes: dict[str, Pipe] = {}
for line in lines:
r = re.match(
R"Valve ([A-Z]+) has flow rate=([0-9]+); tunnels? leads? to valves? (.+)",
line,
@ -137,9 +139,9 @@ for line in lines:
pipes[g[0]] = Pipe(g[0], int(g[1]), g[2].split(", "))
# compute distances from one valve to any other
distances: dict[tuple[Pipe, Pipe], int] = {}
for pipe_1 in pipes.values():
# compute distances from one valve to any other
distances: dict[tuple[Pipe, Pipe], int] = {}
for pipe_1 in pipes.values():
distances.update(
{
(pipe_1, pipe_2): distance
@ -147,12 +149,11 @@ for pipe_1 in pipes.values():
}
)
# valves with flow
relevant_pipes = frozenset(pipe for pipe in pipes.values() if pipe.flow > 0)
# valves with flow
relevant_pipes = frozenset(pipe for pipe in pipes.values() if pipe.flow > 0)
# 1651, 1653
yield part_1(pipes["AA"], 30, distances, relevant_pipes)
# 1651, 1653
print(part_1(pipes["AA"], 30, distances, relevant_pipes))
# 1707, 2223
print(part_2(pipes["AA"], 26, distances, relevant_pipes))
# 1707, 2223
yield part_2(pipes["AA"], 26, distances, relevant_pipes)

50
src/holt59/aoc/2022/day17.py
View File

@ -1,12 +1,16 @@
import sys
from typing import Sequence, TypeVar
from typing import Any, Iterator, Sequence, TypeAlias, TypeVar
import numpy as np
from numpy.typing import NDArray
from ..base import BaseSolver
T = TypeVar("T")
Tower: TypeAlias = NDArray[np.bool]
def print_tower(tower: np.ndarray, out: str = "#"):
def print_tower(tower: Tower, out: str = "#"):
print("-" * (tower.shape[1] + 2))
non_empty = False
for row in reversed(range(1, tower.shape[0])):
@ -17,7 +21,7 @@ def print_tower(tower: np.ndarray, out: str = "#"):
print("+" + "-" * tower.shape[1] + "+")
def tower_height(tower: np.ndarray) -> int:
def tower_height(tower: Tower) -> int:
return int(tower.shape[0] - tower[::-1, :].argmax(axis=0).min() - 1)
@ -45,8 +49,8 @@ def build_tower(
n_rocks: int,
jets: str,
early_stop: bool = False,
init: np.ndarray = np.ones(WIDTH, dtype=bool),
) -> tuple[np.ndarray, int, int, dict[int, int]]:
init: Tower = np.ones(WIDTH, dtype=bool),
) -> tuple[Tower, int, int, dict[int, int]]:
tower = EMPTY_BLOCKS.copy()
tower[0, :] = init
@ -95,26 +99,24 @@ def build_tower(
return tower, rock_count, done_at.get((i_rock, i_jet), -1), heights
line = sys.stdin.read().strip()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
tower, *_ = build_tower(2022, input)
yield tower_height(tower)
tower, *_ = build_tower(2022, line)
answer_1 = tower_height(tower)
print(f"answer 1 is {answer_1}")
TOTAL_ROCKS = 1_000_000_000_000
_tower_1, n_rocks_1, prev_1, heights_1 = build_tower(TOTAL_ROCKS, input, True)
assert prev_1 > 0
TOTAL_ROCKS = 1_000_000_000_000
tower_1, n_rocks_1, prev_1, heights_1 = build_tower(TOTAL_ROCKS, line, True)
assert prev_1 > 0
# 2767 1513
remaining_rocks = TOTAL_ROCKS - n_rocks_1
n_repeat_rocks = n_rocks_1 - prev_1
n_repeat_towers = remaining_rocks // n_repeat_rocks
# 2767 1513
remaining_rocks = TOTAL_ROCKS - n_rocks_1
n_repeat_rocks = n_rocks_1 - prev_1
n_repeat_towers = remaining_rocks // n_repeat_rocks
base_height = heights_1[prev_1]
repeat_height = heights_1[prev_1 + n_repeat_rocks - 1] - heights_1[prev_1]
remaining_height = (
base_height = heights_1[prev_1]
repeat_height = heights_1[prev_1 + n_repeat_rocks - 1] - heights_1[prev_1]
remaining_height = (
heights_1[prev_1 + remaining_rocks % n_repeat_rocks] - heights_1[prev_1]
)
)
answer_2 = base_height + (n_repeat_towers + 1) * repeat_height + remaining_height
print(f"answer 2 is {answer_2}")
yield base_height + (n_repeat_towers + 1) * repeat_height + remaining_height

48
src/holt59/aoc/2022/day18.py
View File

@ -1,33 +1,38 @@
import sys
from typing import Any, Iterator
import numpy as np
xyz = np.asarray(
from ..base import BaseSolver
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
xyz = np.asarray(
[
tuple(int(x) for x in row.split(",")) # type: ignore
for row in sys.stdin.read().splitlines()
for row in input.splitlines()
]
)
)
xyz = xyz - xyz.min(axis=0) + 1
xyz = xyz - xyz.min(axis=0) + 1
cubes = np.zeros(xyz.max(axis=0) + 3, dtype=bool)
cubes[xyz[:, 0], xyz[:, 1], xyz[:, 2]] = True
cubes = np.zeros(xyz.max(axis=0) + 3, dtype=bool)
cubes[xyz[:, 0], xyz[:, 1], xyz[:, 2]] = True
n_dims = len(cubes.shape)
faces = [(-1, 0, 0), (1, 0, 0), (0, -1, 0), (0, 1, 0), (0, 0, -1), (0, 0, 1)]
faces = [(-1, 0, 0), (1, 0, 0), (0, -1, 0), (0, 1, 0), (0, 0, -1), (0, 0, 1)]
yield sum(
1
for x, y, z in xyz
for dx, dy, dz in faces
if not cubes[x + dx, y + dy, z + dz]
)
answer_1 = sum(
1 for x, y, z in xyz for dx, dy, dz in faces if not cubes[x + dx, y + dy, z + dz]
)
print(f"answer 1 is {answer_1}")
visited = np.zeros_like(cubes, dtype=bool)
queue = [(0, 0, 0)]
visited = np.zeros_like(cubes, dtype=bool)
queue = [(0, 0, 0)]
n_faces = 0
while queue:
n_faces = 0
while queue:
x, y, z = queue.pop(0)
if visited[x, y, z]:
@ -37,7 +42,9 @@ while queue:
for dx, dy, dz in faces:
nx, ny, nz = x + dx, y + dy, z + dz
if not all(n >= 0 and n < cubes.shape[i] for i, n in enumerate((nx, ny, nz))):
if not all(
n >= 0 and n < cubes.shape[i] for i, n in enumerate((nx, ny, nz))
):
continue
if visited[nx, ny, nz]:
@ -47,4 +54,5 @@ while queue:
n_faces += 1
else:
queue.append((nx, ny, nz))
print(f"answer 2 is {n_faces}")
yield n_faces

58
src/holt59/aoc/2022/day19.py
View File

@ -1,10 +1,11 @@
import sys
from typing import Any, Literal
from typing import Any, Iterator, Literal
import numpy as np
import parse # pyright: ignore[reportMissingTypeStubs]
from numpy.typing import NDArray
from ..base import BaseSolver
Reagent = Literal["ore", "clay", "obsidian", "geode"]
REAGENTS: tuple[Reagent, ...] = (
"ore",
@ -62,29 +63,6 @@ def dominates(lhs: State, rhs: State):
)
lines = sys.stdin.read().splitlines()
blueprints: list[dict[Reagent, IntOfReagent]] = []
for line in lines:
r: list[int] = parse.parse( # type: ignore
"Blueprint {}: "
"Each ore robot costs {:d} ore. "
"Each clay robot costs {:d} ore. "
"Each obsidian robot costs {:d} ore and {:d} clay. "
"Each geode robot costs {:d} ore and {:d} obsidian.",
line,
)
blueprints.append(
{
"ore": {"ore": r[1]},
"clay": {"ore": r[2]},
"obsidian": {"ore": r[3], "clay": r[4]},
"geode": {"ore": r[5], "obsidian": r[6]},
}
)
def run(blueprint: dict[Reagent, dict[Reagent, int]], max_time: int) -> int:
# since we can only build one robot per time, we do not need more than X robots
# of type K where X is the maximum number of K required among all robots, e.g.,
@ -173,11 +151,31 @@ def run(blueprint: dict[Reagent, dict[Reagent, int]], max_time: int) -> int:
return max(state.reagents["geode"] for state in state_after_t[max_time])
answer_1 = sum(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
blueprints: list[dict[Reagent, IntOfReagent]] = []
for line in input.splitlines():
r: list[int] = parse.parse( # type: ignore
"Blueprint {}: "
"Each ore robot costs {:d} ore. "
"Each clay robot costs {:d} ore. "
"Each obsidian robot costs {:d} ore and {:d} clay. "
"Each geode robot costs {:d} ore and {:d} obsidian.",
line,
)
blueprints.append(
{
"ore": {"ore": r[1]},
"clay": {"ore": r[2]},
"obsidian": {"ore": r[3], "clay": r[4]},
"geode": {"ore": r[5], "obsidian": r[6]},
}
)
yield sum(
(i_blueprint + 1) * run(blueprint, 24)
for i_blueprint, blueprint in enumerate(blueprints)
)
print(f"answer 1 is {answer_1}")
)
answer_2 = run(blueprints[0], 32) * run(blueprints[1], 32) * run(blueprints[2], 32)
print(f"answer 2 is {answer_2}")
yield (run(blueprints[0], 32) * run(blueprints[1], 32) * run(blueprints[2], 32))

34
src/holt59/aoc/2022/day2.py
View File

@ -1,4 +1,6 @@
import sys
from typing import Any, Iterator
from ..base import BaseSolver
def score_1(ux: int, vx: int) -> int:
@ -33,21 +35,23 @@ def score_2(ux: int, vx: int) -> int:
return (ux + vx - 1) % 3 + 1 + vx * 3
lines = sys.stdin.readlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# the solution relies on replacing rock / paper / scissor by values 0 / 1 / 2 and using
# modulo-3 arithmetic
#
# in modulo-3 arithmetic, the winning move is 1 + the opponent move (e.g., winning move
# if opponent plays 0 is 1, or 0 if opponent plays 2 (0 = (2 + 1 % 3)))
#
# the solution relies on replacing rock / paper / scissor by values 0 / 1 / 2 and using
# modulo-3 arithmetic
#
# in modulo-3 arithmetic, the winning move is 1 + the opponent move (e.g., winning move
# if opponent plays 0 is 1, or 0 if opponent plays 2 (0 = (2 + 1 % 3)))
#
# we read the lines in a Nx2 in array with value 0/1/2 instead of A/B/C or X/Y/Z for
# easier manipulation
values = [(ord(row[0]) - ord("A"), ord(row[2]) - ord("X")) for row in lines]
# we read the lines in a Nx2 in array with value 0/1/2 instead of A/B/C or X/Y/Z for
# easier manipulation
values = [(ord(row[0]) - ord("A"), ord(row[2]) - ord("X")) for row in lines]
# part 1 - 13526
print(f"answer 1 is {sum(score_1(*v) for v in values)}")
# part 1 - 13526
yield sum(score_1(*v) for v in values)
# part 2 - 14204
print(f"answer 2 is {sum(score_2(*v) for v in values)}")
# part 2 - 14204
yield sum(score_2(*v) for v in values)

15
src/holt59/aoc/2022/day20.py
View File

@ -1,6 +1,8 @@
from __future__ import annotations
import sys
from typing import Any, Iterator
from ..base import BaseSolver
class Number:
@ -65,10 +67,9 @@ def decrypt(numbers: list[Number], key: int, rounds: int) -> int:
)
numbers = [Number(int(x)) for i, x in enumerate(sys.stdin.readlines())]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
numbers = [Number(int(x)) for x in input.splitlines()]
answer_1 = decrypt(numbers, 1, 1)
print(f"answer 1 is {answer_1}")
answer_2 = decrypt(numbers, 811589153, 10)
print(f"answer 2 is {answer_2}")
yield decrypt(numbers, 1, 1)
yield decrypt(numbers, 811589153, 10)

29
src/holt59/aoc/2022/day21.py
View File

@ -1,6 +1,7 @@
import operator
import sys
from typing import Callable
from typing import Any, Callable, Iterator
from ..base import BaseSolver
def compute(monkeys: dict[str, int | tuple[str, str, str]], monkey: str) -> int:
@ -77,13 +78,15 @@ def invert(
return monkeys
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
monkeys: dict[str, int | tuple[str, str, str]] = {}
monkeys: dict[str, int | tuple[str, str, str]] = {}
op_monkeys: set[str] = set()
op_monkeys: set[str] = set()
for line in lines:
for line in lines:
parts = line.split(":")
name = parts[0].strip()
@ -96,12 +99,10 @@ for line in lines:
op_monkeys.add(name)
yield compute(monkeys.copy(), "root")
answer_1 = compute(monkeys.copy(), "root")
print(f"answer 1 is {answer_1}")
# assume the second operand of 'root' can be computed, and the first one depends on
# humn, which is the case is my input and the test input
p1, _, p2 = monkeys["root"] # type: ignore
answer_2 = compute(invert(monkeys, "humn", compute(monkeys.copy(), p2)), "humn")
print(f"answer 2 is {answer_2}")
# assume the second operand of 'root' can be computed, and the first one depends on
# humn, which is the case is my input and the test input
assert isinstance(monkeys["root"], tuple)
p1, _, p2 = monkeys["root"] # type: ignore
yield compute(invert(monkeys, "humn", compute(monkeys.copy(), p2)), "humn")

114
src/holt59/aoc/2022/day22.py
View File

@ -1,51 +1,57 @@
import re
import sys
from typing import Callable
from typing import Any, Callable, Iterator
import numpy as np
from ..base import BaseSolver
VOID, EMPTY, WALL = 0, 1, 2
TILE_FROM_CHAR = {" ": VOID, ".": EMPTY, "#": WALL}
SCORES = {"E": 0, "S": 1, "W": 2, "N": 3}
board_map_s, direction_s = sys.stdin.read().split("\n\n")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
board_map_s, direction_s = input.split("\n\n")
# board
board_lines = board_map_s.splitlines()
max_line = max(len(line) for line in board_lines)
board = np.array(
# board
board_lines = board_map_s.splitlines()
max_line = max(len(line) for line in board_lines)
board = np.array(
[
[TILE_FROM_CHAR[c] for c in row] + [VOID] * (max_line - len(row))
for row in board_map_s.splitlines()
]
)
)
directions = [
int(p1) if p2 else p1 for p1, p2 in re.findall(R"(([0-9])+|L|R)", direction_s)
]
directions = [
int(p1) if p2 else p1
for p1, p2 in re.findall(R"(([0-9])+|L|R)", direction_s)
]
# find on each row and column the first and last non-void
row_first_non_void = np.argmax(board != VOID, axis=1)
row_last_non_void = (
board.shape[1] - np.argmax(board[:, ::-1] != VOID, axis=1) - 1
)
col_first_non_void = np.argmax(board != VOID, axis=0)
col_last_non_void = (
board.shape[0] - np.argmax(board[::-1, :] != VOID, axis=0) - 1
)
# find on each row and column the first and last non-void
row_first_non_void = np.argmax(board != VOID, axis=1)
row_last_non_void = board.shape[1] - np.argmax(board[:, ::-1] != VOID, axis=1) - 1
col_first_non_void = np.argmax(board != VOID, axis=0)
col_last_non_void = board.shape[0] - np.argmax(board[::-1, :] != VOID, axis=0) - 1
faces = np.zeros_like(board)
size = np.gcd(board.shape[0], board.shape[1])
for row in range(0, board.shape[0], size):
faces = np.zeros_like(board)
size = np.gcd(board.shape[0], board.shape[1])
for row in range(0, board.shape[0], size):
for col in range(row_first_non_void[row], row_last_non_void[row], size):
faces[row : row + size, col : col + size] = faces.max() + 1
SIZE = np.gcd(*board.shape)
SIZE = np.gcd(*board.shape)
# TODO: deduce this from the actual cube...
faces_wrap: dict[int, dict[str, Callable[[int, int], tuple[int, int, str]]]]
# TODO: deduce this from the actual cube...
faces_wrap: dict[int, dict[str, Callable[[int, int], tuple[int, int, str]]]]
if board.shape == (12, 16): # example
if board.shape == (12, 16): # example
faces_wrap = {
1: {
"W": lambda y, x: (4, 4 + y, "S"), # 3N
@ -73,7 +79,7 @@ if board.shape == (12, 16): # example
},
}
else:
else:
faces_wrap = {
1: {
"W": lambda y, x: (3 * SIZE - y - 1, 0, "E"), # 4W
@ -103,8 +109,7 @@ else:
},
}
def wrap_part_1(y0: int, x0: int, r0: str) -> tuple[int, int, str]:
def wrap_part_1(y0: int, x0: int, r0: str) -> tuple[int, int, str]:
if r0 == "E":
return y0, row_first_non_void[y0], r0
elif r0 == "S":
@ -116,14 +121,14 @@ def wrap_part_1(y0: int, x0: int, r0: str) -> tuple[int, int, str]:
assert False
def wrap_part_2(y0: int, x0: int, r0: str) -> tuple[int, int, str]:
def wrap_part_2(y0: int, x0: int, r0: str) -> tuple[int, int, str]:
cube = faces[y0, x0]
assert r0 in faces_wrap[cube]
return faces_wrap[cube][r0](y0, x0)
def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int, str]:
def run(
wrap: Callable[[int, int, str], tuple[int, int, str]],
) -> tuple[int, int, str]:
y0 = 0
x0 = np.where(board[0] == EMPTY)[0][0]
r0 = "E"
@ -132,7 +137,9 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
if isinstance(direction, int):
while direction > 0:
if r0 == "E":
xi = np.where(board[y0, x0 + 1 : x0 + direction + 1] == WALL)[0]
xi = np.where(
board[y0, x0 + 1 : x0 + direction + 1] == WALL
)[0]
if len(xi):
x0 = x0 + xi[0]
direction = 0
@ -148,10 +155,14 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
x0 = row_last_non_void[y0]
direction = 0
else:
direction = direction - (row_last_non_void[y0] - x0) - 1
direction = (
direction - (row_last_non_void[y0] - x0) - 1
)
y0, x0, r0 = y0_t, x0_t, r0_t
elif r0 == "S":
yi = np.where(board[y0 + 1 : y0 + direction + 1, x0] == WALL)[0]
yi = np.where(
board[y0 + 1 : y0 + direction + 1, x0] == WALL
)[0]
if len(yi):
y0 = y0 + yi[0]
direction = 0
@ -167,7 +178,9 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
y0 = col_last_non_void[x0]
direction = 0
else:
direction = direction - (col_last_non_void[x0] - y0) - 1
direction = (
direction - (col_last_non_void[x0] - y0) - 1
)
y0, x0, r0 = y0_t, x0_t, r0_t
elif r0 == "W":
left = max(x0 - direction - 1, 0)
@ -175,7 +188,10 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
if len(xi):
x0 = left + xi[-1] + 1
direction = 0
elif x0 - direction >= 0 and board[y0, x0 - direction] == EMPTY:
elif (
x0 - direction >= 0
and board[y0, x0 - direction] == EMPTY
):
x0 = x0 - direction
direction = 0
else:
@ -184,7 +200,9 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
x0 = row_first_non_void[y0]
direction = 0
else:
direction = direction - (x0 - row_first_non_void[y0]) - 1
direction = (
direction - (x0 - row_first_non_void[y0]) - 1
)
y0, x0, r0 = y0_t, x0_t, r0_t
elif r0 == "N":
top = max(y0 - direction - 1, 0)
@ -192,7 +210,10 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
if len(yi):
y0 = top + yi[-1] + 1
direction = 0
elif y0 - direction >= 0 and board[y0 - direction, x0] == EMPTY:
elif (
y0 - direction >= 0
and board[y0 - direction, x0] == EMPTY
):
y0 = y0 - direction
direction = 0
else:
@ -201,7 +222,9 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
y0 = col_first_non_void[x0]
direction = 0
else:
direction = direction - (y0 - col_first_non_void[x0]) - 1
direction = (
direction - (y0 - col_first_non_void[x0]) - 1
)
y0, x0, r0 = y0_t, x0_t, r0_t
else:
r0 = {
@ -213,11 +236,8 @@ def run(wrap: Callable[[int, int, str], tuple[int, int, str]]) -> tuple[int, int
return y0, x0, r0
y1, x1, r1 = run(wrap_part_1)
yield 1000 * (1 + y1) + 4 * (1 + x1) + SCORES[r1]
y1, x1, r1 = run(wrap_part_1)
answer_1 = 1000 * (1 + y1) + 4 * (1 + x1) + SCORES[r1]
print(f"answer 1 is {answer_1}")
y2, x2, r2 = run(wrap_part_2)
answer_2 = 1000 * (1 + y2) + 4 * (1 + x2) + SCORES[r2]
print(f"answer 2 is {answer_2}")
y2, x2, r2 = run(wrap_part_2)
yield 1000 * (1 + y2) + 4 * (1 + x2) + SCORES[r2]

41
src/holt59/aoc/2022/day23.py
View File

@ -1,6 +1,8 @@
import itertools
import sys
from collections import defaultdict
from typing import Any, Iterator
from ..base import BaseSolver
Directions = list[
tuple[
@ -18,7 +20,7 @@ DIRECTIONS: Directions = [
def min_max_yx(positions: set[tuple[int, int]]) -> tuple[int, int, int, int]:
ys, xs = {y for y, x in positions}, {x for y, x in positions}
ys, xs = {y for y, _x in positions}, {x for _y, x in positions}
return min(ys), min(xs), max(ys), max(xs)
@ -69,30 +71,33 @@ def round(
directions.append(directions.pop(0))
POSITIONS = {
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
POSITIONS = {
(i, j)
for i, row in enumerate(sys.stdin.read().splitlines())
for i, row in enumerate(input.splitlines())
for j, col in enumerate(row)
if col == "#"
}
}
# === part 1 ===
# === part 1 ===
p1, d1 = POSITIONS.copy(), DIRECTIONS.copy()
for r in range(10):
p1, d1 = POSITIONS.copy(), DIRECTIONS.copy()
for _ in range(10):
round(p1, d1)
min_y, min_x, max_y, max_x = min_max_yx(p1)
answer_1 = sum(
(y, x) not in p1 for y in range(min_y, max_y + 1) for x in range(min_x, max_x + 1)
)
print(f"answer 1 is {answer_1}")
min_y, min_x, max_y, max_x = min_max_yx(p1)
yield sum(
(y, x) not in p1
for y in range(min_y, max_y + 1)
for x in range(min_x, max_x + 1)
)
# === part 2 ===
# === part 2 ===
p2, d2 = POSITIONS.copy(), DIRECTIONS.copy()
answer_2 = 0
while True:
p2, d2 = POSITIONS.copy(), DIRECTIONS.copy()
answer_2 = 0
while True:
answer_2 += 1
backup = p2.copy()
round(p2, d2)
@ -100,4 +105,4 @@ while True:
if backup == p2:
break
print(f"answer 2 is {answer_2}")
yield answer_2

75
src/holt59/aoc/2022/day24.py
View File

@ -1,36 +1,46 @@
import heapq
import math
import sys
from collections import defaultdict
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
winds = {
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
winds = {
(i - 1, j - 1, lines[i][j])
for i in range(1, len(lines) - 1)
for j in range(1, len(lines[i]) - 1)
if lines[i][j] != "."
}
}
n_rows, n_cols = len(lines) - 2, len(lines[0]) - 2
CYCLE = math.lcm(n_rows, n_cols)
n_rows, n_cols = len(lines) - 2, len(lines[0]) - 2
CYCLE = math.lcm(n_rows, n_cols)
east_winds = [{j for j in range(n_cols) if (i, j, ">") in winds} for i in range(n_rows)]
west_winds = [{j for j in range(n_cols) if (i, j, "<") in winds} for i in range(n_rows)]
north_winds = [
east_winds = [
{j for j in range(n_cols) if (i, j, ">") in winds} for i in range(n_rows)
]
west_winds = [
{j for j in range(n_cols) if (i, j, "<") in winds} for i in range(n_rows)
]
north_winds = [
{i for i in range(n_rows) if (i, j, "^") in winds} for j in range(n_cols)
]
south_winds = [
]
south_winds = [
{i for i in range(n_rows) if (i, j, "v") in winds} for j in range(n_cols)
]
]
def run(start: tuple[int, int], start_cycle: int, end: tuple[int, int]):
def run(start: tuple[int, int], start_cycle: int, end: tuple[int, int]):
def heuristic(y: int, x: int) -> int:
return abs(end[0] - y) + abs(end[1] - x)
# (distance + heuristic, distance, (start_pos, cycle))
queue = [(heuristic(start[0], start[1]), 0, ((start[0], start[1]), start_cycle))]
queue = [
(heuristic(start[0], start[1]), 0, ((start[0], start[1]), start_cycle))
]
visited: set[tuple[tuple[int, int], int]] = set()
distances: dict[tuple[int, int], dict[int, int]] = defaultdict(lambda: {})
@ -54,13 +64,17 @@ def run(start: tuple[int, int], start_cycle: int, end: tuple[int, int]):
n_cycle = (cycle + 1) % CYCLE
if (ty, tx) == end:
heapq.heappush(queue, (distance + 1, distance + 1, ((ty, tx), n_cycle)))
heapq.heappush(
queue, (distance + 1, distance + 1, ((ty, tx), n_cycle))
)
break
if ((ty, tx), n_cycle) in visited:
continue
if (ty, tx) != start and (ty < 0 or tx < 0 or ty >= n_rows or tx >= n_cols):
if (ty, tx) != start and (
ty < 0 or tx < 0 or ty >= n_rows or tx >= n_cols
):
continue
if (ty, tx) != start:
@ -75,24 +89,29 @@ def run(start: tuple[int, int], start_cycle: int, end: tuple[int, int]):
heapq.heappush(
queue,
((heuristic(ty, tx) + distance + 1, distance + 1, ((ty, tx), n_cycle))),
(
(
heuristic(ty, tx) + distance + 1,
distance + 1,
((ty, tx), n_cycle),
)
),
)
return distances, next(iter(distances[end].values()))
start = (
start = (
-1,
next(j for j in range(1, len(lines[0]) - 1) if lines[0][j] == ".") - 1,
)
end = (
)
end = (
n_rows,
next(j for j in range(1, len(lines[-1]) - 1) if lines[-1][j] == ".") - 1,
)
)
distances_1, forward_1 = run(start, 0, end)
print(f"answer 1 is {forward_1}")
distances_1, forward_1 = run(start, 0, end)
yield forward_1
distances_2, return_1 = run(end, next(iter(distances_1[end].keys())), start)
distances_3, forward_2 = run(start, next(iter(distances_2[start].keys())), end)
print(f"answer 2 is {forward_1 + return_1 + forward_2}")
distances_2, return_1 = run(end, next(iter(distances_1[end].keys())), start)
_distances_3, forward_2 = run(start, next(iter(distances_2[start].keys())), end)
yield forward_1 + return_1 + forward_2

21
src/holt59/aoc/2022/day25.py
View File

@ -1,19 +1,22 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
coeffs = {"2": 2, "1": 1, "0": 0, "-": -1, "=": -2}
from ..base import BaseSolver
def snafu2number(number: str) -> int:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
coeffs = {"2": 2, "1": 1, "0": 0, "-": -1, "=": -2}
def snafu2number(number: str) -> int:
value = 0
for c in number:
value *= 5
value += coeffs[c]
return value
def number2snafu(number: int) -> str:
def number2snafu(number: int) -> str:
values = ["0", "1", "2", "=", "-"]
res = ""
while number > 0:
@ -22,6 +25,4 @@ def number2snafu(number: int) -> str:
number = number // 5 + int(mod >= 3)
return "".join(reversed(res))
answer_1 = number2snafu(sum(map(snafu2number, lines)))
print(f"answer 1 is {answer_1}")
yield number2snafu(sum(map(snafu2number, lines)))

33
src/holt59/aoc/2022/day3.py
View File

@ -1,23 +1,28 @@
import string
import sys
from typing import Any, Iterator
lines = [line.strip() for line in sys.stdin.readlines()]
from ..base import BaseSolver
# extract content of each part
parts = [(set(line[: len(line) // 2]), set(line[len(line) // 2 :])) for line in lines]
# priorities
priorities = {c: i + 1 for i, c in enumerate(string.ascii_letters)}
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
# part 1
part1 = sum(priorities[c] for p1, p2 in parts for c in p1.intersection(p2))
print(f"answer 1 is {part1}")
# extract content of each part
parts = [
(set(line[: len(line) // 2]), set(line[len(line) // 2 :])) for line in lines
]
# part 2
n_per_group = 3
part2 = sum(
# priorities
priorities = {c: i + 1 for i, c in enumerate(string.ascii_letters)}
# part 1
yield sum(priorities[c] for p1, p2 in parts for c in p1.intersection(p2))
# part 2
n_per_group = 3
yield sum(
priorities[c]
for i in range(0, len(lines), n_per_group)
for c in set(lines[i]).intersection(*lines[i + 1 : i + n_per_group])
)
print(f"answer 2 is {part2}")
)

17
src/holt59/aoc/2022/day4.py
View File

@ -1,6 +1,6 @@
import sys
from typing import Any, Iterator
lines = [line.strip() for line in sys.stdin.readlines()]
from ..base import BaseSolver
def make_range(value: str) -> set[int]:
@ -8,10 +8,13 @@ def make_range(value: str) -> set[int]:
return set(range(int(parts[0]), int(parts[1]) + 1))
sections = [tuple(make_range(part) for part in line.split(",")) for line in lines]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
answer_1 = sum(s1.issubset(s2) or s2.issubset(s1) for s1, s2 in sections)
print(f"answer 1 is {answer_1}")
sections = [
tuple(make_range(part) for part in line.split(",")) for line in lines
]
answer_2 = sum(bool(s1.intersection(s2)) for s1, s2 in sections)
print(f"answer 1 is {answer_2}")
yield sum(s1.issubset(s2) or s2.issubset(s1) for s1, s2 in sections)
yield sum(bool(s1.intersection(s2)) for s1, s2 in sections)

38
src/holt59/aoc/2022/day5.py
View File

@ -1,41 +1,43 @@
import copy
import sys
from typing import Any, Iterator
blocks_s, moves_s = (part.splitlines() for part in sys.stdin.read().split("\n\n"))
from ..base import BaseSolver
blocks: dict[str, list[str]] = {stack: [] for stack in blocks_s[-1].split()}
# this codes assumes that the lines are regular, i.e., 4 characters per "crate" in the
# form of '[X] ' (including the trailing space)
#
for block in blocks_s[-2::-1]:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
blocks_s, moves_s = (part.splitlines() for part in input.split("\n\n"))
blocks: dict[str, list[str]] = {stack: [] for stack in blocks_s[-1].split()}
# this codes assumes that the lines are regular, i.e., 4 characters per "crate" in the
# form of '[X] ' (including the trailing space)
#
for block in blocks_s[-2::-1]:
for stack, index in zip(blocks, range(0, len(block), 4)):
crate = block[index + 1 : index + 2].strip()
if crate:
blocks[stack].append(crate)
# part 1 - deep copy for part 2
blocks_1 = copy.deepcopy(blocks)
# part 1 - deep copy for part 2
blocks_1 = copy.deepcopy(blocks)
for move in moves_s:
for move in moves_s:
_, count_s, _, from_, _, to_ = move.strip().split()
for _i in range(int(count_s)):
blocks_1[to_].append(blocks_1[from_].pop())
# part 2
blocks_2 = copy.deepcopy(blocks)
# part 2
blocks_2 = copy.deepcopy(blocks)
for move in moves_s:
for move in moves_s:
_, count_s, _, from_, _, to_ = move.strip().split()
count = int(count_s)
blocks_2[to_].extend(blocks_2[from_][-count:])
del blocks_2[from_][-count:]
answer_1 = "".join(s[-1] for s in blocks_1.values())
print(f"answer 1 is {answer_1}")
answer_2 = "".join(s[-1] for s in blocks_2.values())
print(f"answer 2 is {answer_2}")
yield "".join(s[-1] for s in blocks_1.values())
yield "".join(s[-1] for s in blocks_2.values())

13
src/holt59/aoc/2022/day6.py
View File

@ -1,4 +1,6 @@
import sys
from typing import Any, Iterator
from ..base import BaseSolver
def index_of_first_n_differents(data: str, n: int) -> int:
@ -8,8 +10,7 @@ def index_of_first_n_differents(data: str, n: int) -> int:
return -1
data = sys.stdin.read().strip()
print(f"answer 1 is {index_of_first_n_differents(data, 4)}")
print(f"answer 2 is {index_of_first_n_differents(data, 14)}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
yield index_of_first_n_differents(input, 4)
yield index_of_first_n_differents(input, 14)

67
src/holt59/aoc/2022/day7.py
View File

@ -1,30 +1,35 @@
import sys
from pathlib import Path
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
# we are going to use Path to create path and go up/down in the file tree since it
# implements everything we need
#
# we can use .resolve() to get normalized path, although this will add C:\ to all paths
# on Windows but that is not an issue since only the sizes matter
#
# mapping from path to list of files or directories
trees: dict[Path, list[Path]] = {}
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
# mapping from paths to either size (for file) or -1 for directory
sizes: dict[Path, int] = {}
# we are going to use Path to create path and go up/down in the file tree since it
# implements everything we need
#
# we can use .resolve() to get normalized path, although this will add C:\ to all paths
# on Windows but that is not an issue since only the sizes matter
#
# first line must be a cd otherwise we have no idea where we are
assert lines[0].startswith("$ cd")
base_path = Path(lines[0].strip("$").split()[1]).resolve()
cur_path = base_path
# mapping from path to list of files or directories
trees: dict[Path, list[Path]] = {}
trees[cur_path] = []
sizes[cur_path] = -1
# mapping from paths to either size (for file) or -1 for directory
sizes: dict[Path, int] = {}
for line in lines[1:]:
# first line must be a cd otherwise we have no idea where we are
assert lines[0].startswith("$ cd")
base_path = Path(lines[0].strip("$").split()[1]).resolve()
cur_path = base_path
trees[cur_path] = []
sizes[cur_path] = -1
for line in lines[1:]:
# command
if line.startswith("$"):
parts = line.strip("$").strip().split()
@ -53,8 +58,7 @@ for line in lines[1:]:
trees[cur_path].append(path)
sizes[path] = size
def compute_size(path: Path) -> int:
def compute_size(path: Path) -> int:
size = sizes[path]
if size >= 0:
@ -62,19 +66,16 @@ def compute_size(path: Path) -> int:
return sum(compute_size(sub) for sub in trees[path])
acc_sizes = {path: compute_size(path) for path in trees}
acc_sizes = {path: compute_size(path) for path in trees}
# part 1
yield sum(size for size in acc_sizes.values() if size <= 100_000)
# part 1
answer_1 = sum(size for size in acc_sizes.values() if size <= 100_000)
print(f"answer 1 is {answer_1}")
# part 2
total_space = 70_000_000
update_space = 30_000_000
free_space = total_space - acc_sizes[base_path]
# part 2
total_space = 70_000_000
update_space = 30_000_000
free_space = total_space - acc_sizes[base_path]
to_free_space = update_space - free_space
to_free_space = update_space - free_space
answer_2 = min(size for size in acc_sizes.values() if size >= to_free_space)
print(f"answer 2 is {answer_2}")
yield min(size for size in acc_sizes.values() if size >= to_free_space)

37
src/holt59/aoc/2022/day8.py
View File

@ -1,15 +1,20 @@
import sys
from typing import Any, Iterator
import numpy as np
from numpy.typing import NDArray
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
trees = np.array([[int(x) for x in row] for row in lines])
# answer 1
highest_trees = np.ones(trees.shape + (4,), dtype=int) * -1
highest_trees[1:-1, 1:-1] = [
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
trees = np.array([[int(x) for x in row] for row in lines])
# answer 1
highest_trees = np.ones(trees.shape + (4,), dtype=int) * -1
highest_trees[1:-1, 1:-1] = [
[
[
trees[:i, j].max(),
@ -20,13 +25,11 @@ highest_trees[1:-1, 1:-1] = [
for j in range(1, trees.shape[1] - 1)
]
for i in range(1, trees.shape[0] - 1)
]
]
answer_1 = (highest_trees.min(axis=2) < trees).sum()
print(f"answer 1 is {answer_1}")
yield (highest_trees.min(axis=2) < trees).sum()
def viewing_distance(row_of_trees: NDArray[np.int_], value: int) -> int:
def viewing_distance(row_of_trees: NDArray[np.int_], value: int) -> int:
w = np.where(row_of_trees >= value)[0]
if not w.size:
@ -34,10 +37,9 @@ def viewing_distance(row_of_trees: NDArray[np.int_], value: int) -> int:
return w[0] + 1
# answer 2
v_distances = np.zeros(trees.shape + (4,), dtype=int)
v_distances[1:-1, 1:-1, :] = [
# answer 2
v_distances = np.zeros(trees.shape + (4,), dtype=int)
v_distances[1:-1, 1:-1, :] = [
[
[
viewing_distance(trees[i - 1 :: -1, j], trees[i, j]),
@ -48,6 +50,5 @@ v_distances[1:-1, 1:-1, :] = [
for j in range(1, trees.shape[1] - 1)
]
for i in range(1, trees.shape[0] - 1)
]
answer_2 = np.prod(v_distances, axis=2).max()
print(f"answer 2 is {answer_2}")
]
yield np.prod(v_distances, axis=2).max()

26
src/holt59/aoc/2022/day9.py
View File

@ -1,7 +1,10 @@
import sys
import itertools as it
from typing import Any, Iterator
import numpy as np
from ..base import BaseSolver
def move(head: tuple[int, int], command: str) -> tuple[int, int]:
h_col, h_row = head
@ -43,17 +46,14 @@ def run(commands: list[str], n_blocks: int) -> list[tuple[int, int]]:
return visited
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = [line.strip() for line in input.splitlines()]
# flatten the commands
commands: list[str] = []
for line in lines:
d, c = line.split()
commands.extend(d * int(c))
# flatten the commands
commands = list(
it.chain(*(p[0] * int(p[1]) for line in lines if (p := line.split())))
)
visited_1 = run(commands, n_blocks=2)
print(f"answer 1 is {len(set(visited_1))}")
visited_2 = run(commands, n_blocks=10)
print(f"answer 2 is {len(set(visited_2))}")
yield len(set(run(commands, n_blocks=2)))
yield len(set(run(commands, n_blocks=10)))

50
src/holt59/aoc/2023/day1.py
View File

@ -1,27 +1,9 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
lookups_1 = {str(d): d for d in range(1, 10)}
lookups_2 = lookups_1 | {
d: i + 1
for i, d in enumerate(
(
"one",
"two",
"three",
"four",
"five",
"six",
"seven",
"eight",
"nine",
)
)
}
from ..base import BaseSolver
def find_values(lookups: dict[str, int]) -> list[int]:
def find_values(lines: list[str], lookups: dict[str, int]) -> list[int]:
values: list[int] = []
for line in filter(bool, lines):
@ -41,5 +23,27 @@ def find_values(lookups: dict[str, int]) -> list[int]:
return values
print(f"answer 1 is {sum(find_values(lookups_1))}")
print(f"answer 2 is {sum(find_values(lookups_2))}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lookups_1 = {str(d): d for d in range(1, 10)}
lookups_2 = lookups_1 | {
d: i + 1
for i, d in enumerate(
(
"one",
"two",
"three",
"four",
"five",
"six",
"seven",
"eight",
"nine",
)
)
}
lines = input.splitlines()
yield sum(find_values(lines, lookups_1))
yield sum(find_values(lines, lookups_2))

84
src/holt59/aoc/2023/day10.py
View File

@ -1,37 +1,38 @@
import os
import sys
from typing import Literal, cast
from typing import Any, Iterator, Literal, cast
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
from ..base import BaseSolver
Symbol = Literal["|", "-", "L", "J", "7", "F", ".", "S"]
lines: list[list[Symbol]] = [
[cast(Symbol, symbol) for symbol in line] for line in sys.stdin.read().splitlines()
]
# find starting point
si, sj = next(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines: list[list[Symbol]] = [
[cast(Symbol, symbol) for symbol in line] for line in input.splitlines()
]
# find starting point
si, sj = next(
(i, j)
for i in range(len(lines))
for j in range(len(lines[0]))
if lines[i][j] == "S"
)
)
# find one of the two outputs
ni, nj = si, sj
for ni, nj, chars in (
# find one of the two outputs
ni, nj = si, sj
for ni, nj, chars in (
(si - 1, sj, "|7F"),
(si + 1, sj, "|LJ"),
(si, sj - 1, "-LF"),
(si, sj + 1, "-J7"),
):
):
if lines[ni][nj] in chars:
break
# part 1 - find the loop (re-used in part 2)
loop = [(si, sj), (ni, nj)]
while True:
# part 1 - find the loop (re-used in part 2)
loop = [(si, sj), (ni, nj)]
while True:
pi, pj = loop[-2]
i, j = loop[-1]
@ -51,30 +52,29 @@ while True:
loop.append((i, j))
answer_1 = len(loop) // 2
print(f"answer 1 is {answer_1}")
yield len(loop) // 2
# part 2
# part 2
# replace S by an appropriate character for the loop below
di1, dj1 = loop[1][0] - loop[0][0], loop[1][1] - loop[0][1]
di2, dj2 = loop[0][0] - loop[-1][0], loop[0][1] - loop[-1][1]
mapping: dict[tuple[int, int], dict[tuple[int, int], Symbol]] = {
# replace S by an appropriate character for the loop below
di1, dj1 = loop[1][0] - loop[0][0], loop[1][1] - loop[0][1]
di2, dj2 = loop[0][0] - loop[-1][0], loop[0][1] - loop[-1][1]
mapping: dict[tuple[int, int], dict[tuple[int, int], Symbol]] = {
(0, 1): {(0, 1): "-", (-1, 0): "F", (1, 0): "L"},
(0, -1): {(0, -1): "-", (-1, 0): "7", (1, 0): "J"},
(1, 0): {(1, 0): "|", (0, 1): "7", (0, -1): "F"},
(-1, 0): {(-1, 0): "|", (0, -1): "L", (0, 1): "J"},
}
lines[si][sj] = mapping[di1, dj1][di2, dj2]
}
lines[si][sj] = mapping[di1, dj1][di2, dj2]
# find the points inside the loop using an adaptation of ray casting for a discrete
# grid (https://stackoverflow.com/a/218081/2666289)
#
# use a set for faster '... in loop' check
#
loop_s = set(loop)
inside: set[tuple[int, int]] = set()
for i in range(len(lines)):
# find the points inside the loop using an adaptation of ray casting for a discrete
# grid (https://stackoverflow.com/a/218081/2666289)
#
# use a set for faster '... in loop' check
#
loop_s = set(loop)
inside: set[tuple[int, int]] = set()
for i in range(len(lines)):
cnt = 0
for j in range(len(lines[0])):
if (i, j) not in loop_s and cnt % 2 == 1:
@ -83,18 +83,18 @@ for i in range(len(lines)):
if (i, j) in loop_s and lines[i][j] in "|LJ":
cnt += 1
if VERBOSE:
if self.verbose:
for i in range(len(lines)):
s = ""
for j in range(len(lines[0])):
if (i, j) == (si, sj):
print("\033[91mS\033[0m", end="")
s += "\033[91mS\033[0m"
elif (i, j) in loop:
print(lines[i][j], end="")
s += lines[i][j]
elif (i, j) in inside:
print("\033[92mI\033[0m", end="")
s += "\033[92mI\033[0m"
else:
print(".", end="")
print()
s += "."
self.logger.info(s)
answer_2 = len(inside)
print(f"answer 2 is {answer_2}")
yield len(inside)

35
src/holt59/aoc/2023/day11.py
View File

@ -1,18 +1,22 @@
import sys
from typing import Any, Iterator
import numpy as np
lines = sys.stdin.read().splitlines()
data = np.array([[c == "#" for c in line] for line in lines])
rows = {c for c in range(data.shape[0]) if not data[c, :].any()}
columns = {c for c in range(data.shape[1]) if not data[:, c].any()}
galaxies_y, galaxies_x = np.where(data) # type: ignore
from ..base import BaseSolver
def compute_total_distance(expansion: int) -> int:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
data = np.array([[c == "#" for c in line] for line in lines])
rows = {c for c in range(data.shape[0]) if not data[c, :].any()}
columns = {c for c in range(data.shape[1]) if not data[:, c].any()}
galaxies_y, galaxies_x = np.where(data) # type: ignore
def compute_total_distance(expansion: int) -> int:
distances: list[int] = []
for g1 in range(len(galaxies_y)):
x1, y1 = int(galaxies_x[g1]), int(galaxies_y[g1])
@ -31,11 +35,8 @@ def compute_total_distance(expansion: int) -> int:
distances.append(dx + dy)
return sum(distances)
# part 1
yield compute_total_distance(2)
# part 1
answer_1 = compute_total_distance(2)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = compute_total_distance(1000000)
print(f"answer 2 is {answer_2}")
# part 2
yield compute_total_distance(1000000)

38
src/holt59/aoc/2023/day12.py
View File

@ -1,9 +1,7 @@
import os
import sys
from functools import lru_cache
from typing import Iterable
from typing import Any, Iterable, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
from ..base import BaseSolver
@lru_cache
@ -77,31 +75,29 @@ def compute_possible_arrangements(
)
def compute_all_possible_arrangements(lines: Iterable[str], repeat: int) -> int:
class Solver(BaseSolver):
def compute_all_possible_arrangements(
self, lines: Iterable[str], repeat: int
) -> int:
count = 0
if VERBOSE:
from tqdm import tqdm
lines = tqdm(lines)
for line in lines:
for i_line, line in enumerate(lines):
self.logger.info(f"processing line {i_line}: {line}...")
parts = line.split(" ")
count += compute_possible_arrangements(
tuple(filter(len, "?".join(parts[0] for _ in range(repeat)).split("."))),
tuple(
filter(len, "?".join(parts[0] for _ in range(repeat)).split("."))
),
tuple(int(c) for c in parts[1].split(",")) * repeat,
)
return count
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
lines = sys.stdin.read().splitlines()
# part 1
yield self.compute_all_possible_arrangements(lines, 1)
# part 1
answer_1 = compute_all_possible_arrangements(lines, 1)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = compute_all_possible_arrangements(lines, 5)
print(f"answer 2 is {answer_2}")
# part 2
yield self.compute_all_possible_arrangements(lines, 5)

24
src/holt59/aoc/2023/day13.py
View File

@ -1,5 +1,6 @@
import sys
from typing import Callable, Literal
from typing import Any, Callable, Iterator, Literal
from ..base import BaseSolver
def split(block: list[str], axis: Literal[0, 1], count: int) -> int:
@ -25,19 +26,18 @@ def split(block: list[str], axis: Literal[0, 1], count: int) -> int:
return 0
blocks = [block.splitlines() for block in sys.stdin.read().split("\n\n")]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
blocks = [block.splitlines() for block in input.split("\n\n")]
# part 1
answer_1 = sum(
# part 1
yield sum(
split(block, axis=1, count=0) + 100 * split(block, axis=0, count=0)
for block in blocks
)
print(f"answer 1 is {answer_1}")
)
# part 2
answer_2 = sum(
# part 2
yield sum(
split(block, axis=1, count=1) + 100 * split(block, axis=0, count=1)
for block in blocks
)
print(f"answer 2 is {answer_2}")
)

46
src/holt59/aoc/2023/day14.py
View File

@ -1,10 +1,9 @@
import sys
from typing import TypeAlias
from typing import Any, Iterator, TypeAlias
from ..base import BaseSolver
RockGrid: TypeAlias = list[list[str]]
rocks0 = [list(line) for line in sys.stdin.read().splitlines()]
def slide_rocks_top(rocks: RockGrid) -> RockGrid:
top = [0 if c == "." else 1 for c in rocks[0]]
@ -34,21 +33,25 @@ def cycle(rocks: RockGrid) -> RockGrid:
return rocks
rocks = slide_rocks_top([[c for c in r] for r in rocks0])
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
rocks0 = [list(line) for line in input.splitlines()]
# part 1
answer_1 = sum(
(len(rocks) - i) * sum(1 for c in row if c == "O") for i, row in enumerate(rocks)
)
print(f"answer 1 is {answer_1}")
rocks = slide_rocks_top([[c for c in r] for r in rocks0])
# part 2
rocks = rocks0
# part 1
yield sum(
(len(rocks) - i) * sum(1 for c in row if c == "O")
for i, row in enumerate(rocks)
)
N = 1000000000
cycles: list[RockGrid] = []
i_cycle: int = -1
for i_cycle in range(N):
# part 2
rocks = rocks0
N = 1000000000
cycles: list[RockGrid] = []
i_cycle: int = -1
for i_cycle in range(N):
rocks = cycle(rocks)
if any(rocks == c for c in cycles):
@ -56,13 +59,12 @@ for i_cycle in range(N):
cycles.append([[c for c in r] for r in rocks])
cycle_start = next(i for i in range(len(cycles)) if (rocks == cycles[i]))
cycle_length = i_cycle - cycle_start
cycle_start = next(i for i in range(len(cycles)) if (rocks == cycles[i]))
cycle_length = i_cycle - cycle_start
ci = cycle_start + (N - cycle_start) % cycle_length - 1
ci = cycle_start + (N - cycle_start) % cycle_length - 1
answer_2 = sum(
yield sum(
(len(rocks) - i) * sum(1 for c in row if c == "O")
for i, row in enumerate(cycles[ci])
)
print(f"answer 2 is {answer_2}")
)

24
src/holt59/aoc/2023/day15.py
View File

@ -1,21 +1,24 @@
import sys
from functools import reduce
from typing import Any, Iterator
steps = sys.stdin.read().strip().split(",")
from ..base import BaseSolver
def _hash(s: str) -> int:
return reduce(lambda v, u: ((v + ord(u)) * 17) % 256, s, 0)
# part 1
answer_1 = sum(map(_hash, steps))
print(f"answer 1 is {answer_1}")
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
steps = input.split(",")
# part 2
boxes: list[dict[str, int]] = [{} for _ in range(256)]
# part 1
yield sum(map(_hash, steps))
for step in steps:
# part 2
boxes: list[dict[str, int]] = [{} for _ in range(256)]
for step in steps:
if (i := step.find("=")) >= 0:
label, length = step[:i], int(step[i + 1 :])
boxes[_hash(label)][label] = length
@ -23,9 +26,8 @@ for step in steps:
label = step[:-1]
boxes[_hash(label)].pop(label, None)
answer_2 = sum(
yield sum(
i_box * i_lens * length
for i_box, box in enumerate(boxes, start=1)
for i_lens, length in enumerate(box.values(), start=1)
)
print(f"answer 2 is {answer_2}")
)

42
src/holt59/aoc/2023/day16.py
View File

@ -1,8 +1,6 @@
import os
import sys
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
from ..base import BaseSolver
CellType: TypeAlias = Literal[".", "|", "-", "\\", "/"]
Direction: TypeAlias = Literal["R", "L", "U", "D"]
@ -78,33 +76,33 @@ def propagate(
return beams
layout: list[list[CellType]] = [
[cast(CellType, col) for col in row] for row in sys.stdin.read().splitlines()
]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
layout: list[list[CellType]] = [
[cast(CellType, col) for col in row] for row in input.splitlines()
]
beams = propagate(layout, (0, 0), "R")
beams = propagate(layout, (0, 0), "R")
if self.verbose:
for row in beams:
self.logger.info("".join("#" if col else "." for col in row))
if VERBOSE:
print("\n".join(["".join("#" if col else "." for col in row) for row in beams]))
# part 1
yield sum(sum(map(bool, row)) for row in beams)
# part 1
answer_1 = sum(sum(map(bool, row)) for row in beams)
print(f"answer 1 is {answer_1}")
# part 2
n_rows, n_cols = len(layout), len(layout[0])
cases: list[tuple[tuple[int, int], Direction]] = []
# part 2
n_rows, n_cols = len(layout), len(layout[0])
cases: list[tuple[tuple[int, int], Direction]] = []
for row in range(n_rows):
for row in range(n_rows):
cases.append(((row, 0), "R"))
cases.append(((row, n_cols - 1), "L"))
for col in range(n_cols):
for col in range(n_cols):
cases.append(((0, col), "D"))
cases.append(((n_rows - 1, col), "U"))
answer_2 = max(
yield max(
sum(sum(map(bool, row)) for row in propagate(layout, start, direction))
for start, direction in cases
)
print(f"answer 2 is {answer_2}")
)

48
src/holt59/aoc/2023/day17.py
View File

@ -1,13 +1,11 @@
from __future__ import annotations
import heapq
import os
import sys
from collections import defaultdict
from dataclasses import dataclass
from typing import Literal, TypeAlias
from typing import Any, Iterator, Literal, TypeAlias
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
from ..base import BaseSolver
Direction: TypeAlias = Literal[">", "<", "^", "v"]
@ -32,11 +30,13 @@ MAPPINGS: dict[Direction, tuple[int, int, Direction]] = {
}
def print_shortest_path(
class Solver(BaseSolver):
def print_shortest_path(
self,
grid: list[list[int]],
target: tuple[int, int],
per_cell: dict[tuple[int, int], list[tuple[Label, int]]],
):
):
assert len(per_cell[target]) == 1
label = per_cell[target][0][0]
@ -66,16 +66,18 @@ def print_shortest_path(
if (r, c) != (prev_label.row, prev_label.col):
p_grid[r][c] = f"\033[93m{grid[r][c]}\033[0m"
p_grid[label.row][label.col] = f"\033[91m{grid[label.row][label.col]}\033[0m"
p_grid[label.row][label.col] = (
f"\033[91m{grid[label.row][label.col]}\033[0m"
)
prev_label = label
p_grid[0][0] = f"\033[92m{grid[0][0]}\033[0m"
print("\n".join("".join(row) for row in p_grid))
for row in p_grid:
self.logger.info("".join(row))
def shortest_many_paths(grid: list[list[int]]) -> dict[tuple[int, int], int]:
def shortest_many_paths(self, grid: list[list[int]]) -> dict[tuple[int, int], int]:
n_rows, n_cols = len(grid), len(grid[0])
visited: dict[tuple[int, int], tuple[Label, int]] = {}
@ -125,13 +127,13 @@ def shortest_many_paths(grid: list[list[int]]) -> dict[tuple[int, int], int]:
return {(r, c): visited[r, c][1] for r in range(n_rows) for c in range(n_cols)}
def shortest_path(
def shortest_path(
self,
grid: list[list[int]],
min_straight: int,
max_straight: int,
lower_bounds: dict[tuple[int, int], int],
) -> int:
) -> int:
n_rows, n_cols = len(grid), len(grid[0])
target = (len(grid) - 1, len(grid[0]) - 1)
@ -215,19 +217,17 @@ def shortest_path(
),
)
if VERBOSE:
print_shortest_path(grid, target, per_cell)
if self.verbose:
self.print_shortest_path(grid, target, per_cell)
return per_cell[target][0][1]
def solve(self, input: str) -> Iterator[Any]:
data = [[int(c) for c in r] for r in input.splitlines()]
estimates = self.shortest_many_paths(data)
data = [[int(c) for c in r] for r in sys.stdin.read().splitlines()]
estimates = shortest_many_paths(data)
# part 1
yield self.shortest_path(data, 1, 3, lower_bounds=estimates)
# part 1
answer_1 = shortest_path(data, 1, 3, lower_bounds=estimates)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = shortest_path(data, 4, 10, lower_bounds=estimates)
print(f"answer 2 is {answer_2}")
# part 2
yield self.shortest_path(data, 4, 10, lower_bounds=estimates)

28
src/holt59/aoc/2023/day18.py
View File

@ -1,5 +1,6 @@
import sys
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
from ..base import BaseSolver
Direction: TypeAlias = Literal["R", "L", "U", "D"]
@ -33,22 +34,23 @@ def polygon(values: list[tuple[Direction, int]]) -> tuple[list[tuple[int, int]],
return corners, perimeter
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# part 1
yield area(
*polygon(
[(cast(Direction, (p := line.split())[0]), int(p[1])) for line in lines]
)
)
# part 1
answer_1 = area(
*polygon([(cast(Direction, (p := line.split())[0]), int(p[1])) for line in lines])
)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = area(
# part 2
yield area(
*polygon(
[
(DIRECTIONS[int((h := line.split()[-1])[-2])], int(h[2:-2], 16))
for line in lines
]
)
)
print(f"answer 2 is {answer_2}")
)

62
src/holt59/aoc/2023/day19.py
View File

@ -1,13 +1,8 @@
import logging
import operator
import os
import sys
from math import prod
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
Category: TypeAlias = Literal["x", "m", "a", "s"]
Part: TypeAlias = dict[Category, int]
@ -22,7 +17,8 @@ Check: TypeAlias = tuple[Category, Literal["<", ">"], int] | None
Workflow: TypeAlias = list[tuple[Check, str]]
def accept(workflows: dict[str, Workflow], part: Part) -> bool:
class Solver(BaseSolver):
def accept(self, workflows: dict[str, Workflow], part: Part) -> bool:
workflow = "in"
decision: bool | None = None
@ -42,8 +38,7 @@ def accept(workflows: dict[str, Workflow], part: Part) -> bool:
return decision
def propagate(workflows: dict[str, Workflow], start: PartWithBounds) -> int:
def propagate(self, workflows: dict[str, Workflow], start: PartWithBounds) -> int:
def _fmt(meta: PartWithBounds) -> str:
return "{" + ", ".join(f"{k}={v}" for k, v in meta.items()) + "}"
@ -52,13 +47,13 @@ def propagate(workflows: dict[str, Workflow], start: PartWithBounds) -> int:
) -> int:
count = 0
if target in workflows:
logging.info(f" transfer to {target}")
self.logger.info(f" transfer to {target}")
queue.append((meta, target))
elif target == "A":
count = prod((high - low + 1) for low, high in meta.values())
logging.info(f" accepted ({count})")
self.logger.info(f" accepted ({count})")
else:
logging.info(" rejected")
self.logger.info(" rejected")
return count
accepted = 0
@ -69,24 +64,26 @@ def propagate(workflows: dict[str, Workflow], start: PartWithBounds) -> int:
while queue:
n_iterations += 1
meta, workflow = queue.pop()
logging.info(f"{workflow}: {_fmt(meta)}")
self.logger.info(f"{workflow}: {_fmt(meta)}")
for check, target in workflows[workflow]:
if check is None:
logging.info(" end-of-workflow")
self.logger.info(" end-of-workflow")
accepted += transfer_or_accept(target, meta, queue)
continue
category, sense, value = check
bounds, op = meta[category], OPERATORS[sense]
logging.info(f" checking {_fmt(meta)} against {category} {sense} {value}")
self.logger.info(
f" checking {_fmt(meta)} against {category} {sense} {value}"
)
if not op(bounds[0], value) and not op(bounds[1], value):
logging.info(" reject, always false")
self.logger.info(" reject, always false")
continue
if op(meta[category][0], value) and op(meta[category][1], value):
logging.info(" accept, always true")
self.logger.info(" accept, always true")
accepted += transfer_or_accept(target, meta, queue)
break
@ -96,18 +93,18 @@ def propagate(workflows: dict[str, Workflow], start: PartWithBounds) -> int:
meta[category], meta2[category] = (value, high), (low, value - 1)
else:
meta[category], meta2[category] = (low, value), (value + 1, high)
logging.info(f" split {_fmt(meta2)} ({target}), {_fmt(meta)}")
self.logger.info(f" split {_fmt(meta2)} ({target}), {_fmt(meta)}")
accepted += transfer_or_accept(target, meta2, queue)
logging.info(f"run took {n_iterations} iterations")
self.logger.info(f"run took {n_iterations} iterations")
return accepted
def solve(self, input: str) -> Iterator[Any]:
workflows_s, parts_s = input.split("\n\n")
workflows_s, parts_s = sys.stdin.read().strip().split("\n\n")
workflows: dict[str, Workflow] = {}
for workflow_s in workflows_s.split("\n"):
workflows: dict[str, Workflow] = {}
for workflow_s in workflows_s.split("\n"):
name, block_s = workflow_s.split("{")
workflows[name] = []
@ -124,17 +121,14 @@ for workflow_s in workflows_s.split("\n"):
check, target = None, block
workflows[name].append((check, target))
# part 1
parts: list[Part] = [
# part 1
parts: list[Part] = [
{cast(Category, s[0]): int(s[2:]) for s in part_s[1:-1].split(",")}
for part_s in parts_s.split("\n")
]
answer_1 = sum(sum(part.values()) for part in parts if accept(workflows, part))
print(f"answer 1 is {answer_1}")
]
yield sum(sum(part.values()) for part in parts if self.accept(workflows, part))
# part 2
answer_2 = propagate(
# part 2
yield self.propagate(
workflows, {cast(Category, c): (1, 4000) for c in ["x", "m", "a", "s"]}
)
print(f"answer 2 is {answer_2}")
)

30
src/holt59/aoc/2023/day2.py
View File

@ -1,15 +1,18 @@
import math
import sys
from typing import Literal, TypeAlias, cast
from typing import Any, Iterator, Literal, TypeAlias, cast
from ..base import BaseSolver
CubeType: TypeAlias = Literal["red", "blue", "green"]
MAX_CUBES: dict[CubeType, int] = {"red": 12, "green": 13, "blue": 14}
# parse games
lines = sys.stdin.read().splitlines()
games: dict[int, list[dict[CubeType, int]]] = {}
for line in filter(bool, lines):
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
games: dict[int, list[dict[CubeType, int]]] = {}
for line in filter(bool, lines):
id_part, sets_part = line.split(":")
games[int(id_part.split(" ")[-1])] = [
@ -21,8 +24,7 @@ for line in filter(bool, lines):
for cube_set_s in sets_part.strip().split(";")
]
# part 1
answer_1 = sum(
yield sum(
id
for id, set_of_cubes in games.items()
if all(
@ -30,14 +32,12 @@ answer_1 = sum(
for cube_set in set_of_cubes
for cube, n_cubes in cube_set.items()
)
)
print(f"answer 1 is {answer_1}")
)
# part 2
answer_2 = sum(
yield sum(
math.prod(
max(cube_set.get(cube, 0) for cube_set in set_of_cubes) for cube in MAX_CUBES
max(cube_set.get(cube, 0) for cube_set in set_of_cubes)
for cube in MAX_CUBES
)
for set_of_cubes in games.values()
)
print(f"answer 2 is {answer_2}")
)

145
src/holt59/aoc/2023/day20.py
View File

@ -1,55 +1,42 @@
import logging
import os
import sys
from collections import defaultdict
from math import lcm
from typing import Literal, TypeAlias
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from typing import Any, Iterator, Literal, TypeAlias
from ..base import BaseSolver
ModuleType: TypeAlias = Literal["broadcaster", "conjunction", "flip-flop"]
PulseType: TypeAlias = Literal["high", "low"]
modules: dict[str, tuple[ModuleType, list[str]]] = {}
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
_modules: dict[str, tuple[ModuleType, list[str]]]
for line in lines:
name, outputs_s = line.split(" -> ")
outputs = outputs_s.split(", ")
if name == "broadcaster":
modules["broadcaster"] = ("broadcaster", outputs)
else:
modules[name[1:]] = (
"conjunction" if name.startswith("&") else "flip-flop",
outputs,
)
def process(
def _process(
self,
start: tuple[str, str, PulseType],
flip_flop_states: dict[str, Literal["on", "off"]],
conjunction_states: dict[str, dict[str, PulseType]],
) -> tuple[dict[PulseType, int], dict[str, dict[PulseType, int]]]:
) -> tuple[dict[PulseType, int], dict[str, dict[PulseType, int]]]:
pulses: list[tuple[str, str, PulseType]] = [start]
counts: dict[PulseType, int] = {"low": 0, "high": 0}
inputs: dict[str, dict[PulseType, int]] = defaultdict(lambda: {"low": 0, "high": 0})
inputs: dict[str, dict[PulseType, int]] = defaultdict(
lambda: {"low": 0, "high": 0}
)
logging.info("starting process... ")
self.logger.info("starting process... ")
while pulses:
input, name, pulse = pulses.pop(0)
logging.info(f"{input} -{pulse}-> {name}")
self.logger.info(f"{input} -{pulse}-> {name}")
counts[pulse] += 1
inputs[name][pulse] += 1
if name not in modules:
if name not in self._modules:
continue
type, outputs = modules[name]
type, outputs = self._modules[name]
if type == "broadcaster":
...
@ -77,11 +64,27 @@ def process(
return counts, inputs
def solve(self, input: str) -> Iterator[Any]:
self._modules = {}
with open("./day20.dot", "w") as fp:
lines = sys.stdin.read().splitlines()
for line in lines:
name, outputs_s = line.split(" -> ")
outputs = outputs_s.split(", ")
if name == "broadcaster":
self._modules["broadcaster"] = ("broadcaster", outputs)
else:
self._modules[name[1:]] = (
"conjunction" if name.startswith("&") else "flip-flop",
outputs,
)
if self.outputs:
with open("./day20.dot", "w") as fp:
fp.write("digraph G {\n")
fp.write("rx [shape=circle, color=red, style=filled];\n")
for name, (type, outputs) in modules.items():
for name, (type, outputs) in self._modules.items():
if type == "conjunction":
shape = "diamond"
elif type == "flip-flop":
@ -89,58 +92,67 @@ with open("./day20.dot", "w") as fp:
else:
shape = "circle"
fp.write(f"{name} [shape={shape}];\n")
for name, (type, outputs) in modules.items():
for name, (type, outputs) in self._modules.items():
for output in outputs:
fp.write(f"{name} -> {output};\n")
fp.write("}\n")
# part 1
flip_flop_states: dict[str, Literal["on", "off"]] = {
name: "off" for name, (type, _) in modules.items() if type == "flip-flop"
}
conjunction_states: dict[str, dict[str, PulseType]] = {
name: {input: "low" for input, (_, outputs) in modules.items() if name in outputs}
for name, (type, _) in modules.items()
# part 1
flip_flop_states: dict[str, Literal["on", "off"]] = {
name: "off"
for name, (type, _) in self._modules.items()
if type == "flip-flop"
}
conjunction_states: dict[str, dict[str, PulseType]] = {
name: {
input: "low"
for input, (_, outputs) in self._modules.items()
if name in outputs
}
for name, (type, _) in self._modules.items()
if type == "conjunction"
}
counts: dict[PulseType, int] = {"low": 0, "high": 0}
for _ in range(1000):
result, _ = process(
}
counts: dict[PulseType, int] = {"low": 0, "high": 0}
for _ in range(1000):
result, _ = self._process(
("button", "broadcaster", "low"), flip_flop_states, conjunction_states
)
for pulse in ("low", "high"):
counts[pulse] += result[pulse]
answer_1 = counts["low"] * counts["high"]
print(f"answer 1 is {answer_1}")
yield counts["low"] * counts["high"]
# part 2
# part 2
# reset states
for name in flip_flop_states:
# reset states
for name in flip_flop_states:
flip_flop_states[name] = "off"
for name in conjunction_states:
for name in conjunction_states:
for input in conjunction_states[name]:
conjunction_states[name][input] = "low"
# find the conjunction connected to rx
to_rx = [name for name, (_, outputs) in modules.items() if "rx" in outputs]
assert len(to_rx) == 1, "cannot handle multiple module inputs for rx"
assert (
modules[to_rx[0]][0] == "conjunction"
), "can only handle conjunction as input to rx"
# find the conjunction connected to rx
to_rx = [
name for name, (_, outputs) in self._modules.items() if "rx" in outputs
]
assert len(to_rx) == 1, "cannot handle multiple module inputs for rx"
assert (
self._modules[to_rx[0]][0] == "conjunction"
), "can only handle conjunction as input to rx"
to_rx_inputs = [name for name, (_, outputs) in modules.items() if to_rx[0] in outputs]
assert all(
modules[i][0] == "conjunction" and len(modules[i][1]) == 1 for i in to_rx_inputs
), "can only handle inversion as second-order inputs to rx"
to_rx_inputs = [
name for name, (_, outputs) in self._modules.items() if to_rx[0] in outputs
]
assert all(
self._modules[i][0] == "conjunction" and len(self._modules[i][1]) == 1
for i in to_rx_inputs
), "can only handle inversion as second-order inputs to rx"
count = 1
cycles: dict[str, int] = {}
second: dict[str, int] = {}
while len(second) != len(to_rx_inputs):
_, inputs = process(
count = 1
cycles: dict[str, int] = {}
second: dict[str, int] = {}
while len(second) != len(to_rx_inputs):
_, inputs = self._process(
("button", "broadcaster", "low"), flip_flop_states, conjunction_states
)
@ -153,9 +165,8 @@ while len(second) != len(to_rx_inputs):
count += 1
assert all(
assert all(
second[k] == cycles[k] * 2 for k in to_rx_inputs
), "cannot only handle cycles starting at the beginning"
), "cannot only handle cycles starting at the beginning"
answer_2 = lcm(*cycles.values())
print(f"answer 2 is {answer_2}")
yield lcm(*cycles.values())

181
src/holt59/aoc/2023/day21.py
View File

@ -1,9 +1,6 @@
import logging
import os
import sys
from typing import Any, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
def reachable(
@ -21,35 +18,39 @@ def reachable(
return tiles
map = sys.stdin.read().splitlines()
start = next(
(i, j) for i in range(len(map)) for j in range(len(map[i])) if map[i][j] == "S"
)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
map = input.splitlines()
start = next(
(i, j)
for i in range(len(map))
for j in range(len(map[i]))
if map[i][j] == "S"
)
# part 1
answer_1 = len(reachable(map, {start}, 6 if len(map) < 20 else 64))
print(f"answer 1 is {answer_1}")
# part 1
yield len(reachable(map, {start}, 6 if len(map) < 20 else 64))
# part 2
# part 2
# the initial map is a square and contains an empty rhombus whose diameter is the size
# of the map, and has only empty cells around the middle row and column
#
# after ~n/2 steps, the first map is filled with a rhombus, after that we get a bigger
# rhombus every n steps
#
# we are going to find the number of cells reached for the initial rhombus, n steps
# after and n * 2 steps after
#
cycle = len(map)
rhombus = (len(map) - 3) // 2 + 1
# the initial map is a square and contains an empty rhombus whose diameter is
# the size of the map, and has only empty cells around the middle row and column
#
# after ~n/2 steps, the first map is filled with a rhombus, after that we get a
# bigger rhombus every n steps
#
# we are going to find the number of cells reached for the initial rhombus, n
# steps after and n * 2 steps after
#
cycle = len(map)
rhombus = (len(map) - 3) // 2 + 1
values: list[int] = []
values.append(len(tiles := reachable(map, {start}, rhombus)))
values.append(len(tiles := reachable(map, tiles, cycle)))
values.append(len(tiles := reachable(map, tiles, cycle)))
values: list[int] = []
values.append(len(tiles := reachable(map, {start}, rhombus)))
values.append(len(tiles := reachable(map, tiles, cycle)))
values.append(len(tiles := reachable(map, tiles, cycle)))
if logging.root.getEffectiveLevel() == logging.INFO:
if self.verbose:
n_rows, n_cols = len(map), len(map[0])
rows = [
@ -65,42 +66,42 @@ if logging.root.getEffectiveLevel() == logging.INFO:
if (i // cycle) % 2 == (j // cycle) % 2:
rows[i][j] = f"\033[91m{rows[i][j]}\033[0m"
print("\n".join("".join(row) for row in rows))
for row in rows:
self.logger.info("".join(row))
self.logger.info(f"values to fit: {values}")
logging.info(f"values to fit: {values}")
# version 1:
#
# after 3 cycles, the figure looks like the following:
#
# I M D
# I J A K D
# H A F A L
# C E A K B
# C G B
#
# after 4 cycles, the figure looks like the following:
#
# I M D
# I J A K D
# I J A B A K D
# H A B A B A L
# C E A B A N F
# C E A N F
# C G F
#
# the 'radius' of the rhombus is the number of cycles minus 1
#
# the 4 'corner' (M, H, L, G) are counted once, the blocks with a corner triangle (D, I,
# C, B) are each counted radius times, the blocks with everything but one corner (J, K,
# E, N) are each counted radius - 1 times
#
# there are two versions of the whole block, A and B in the above (or odd and even),
# depending on the number of cycles, either A or B will be in the center
#
# version 1:
#
# after 3 cycles, the figure looks like the following:
#
# I M D
# I J A K D
# H A F A L
# C E A K B
# C G B
#
# after 4 cycles, the figure looks like the following:
#
# I M D
# I J A K D
# I J A B A K D
# H A B A B A L
# C E A B A N F
# C E A N F
# C G F
#
# the 'radius' of the rhombus is the number of cycles minus 1
#
# the 4 'corner' (M, H, L, G) are counted once, the blocks with a corner triangle (D, I,
# C, B) are each counted radius times, the blocks with everything but one corner (J, K,
# E, N) are each counted radius - 1 times
#
# there are two versions of the whole block, A and B in the above (or odd and even),
# depending on the number of cycles, either A or B will be in the center
#
counts = [
counts = [
[
sum(
(i, j) in tiles
@ -110,40 +111,40 @@ counts = [
for cj in range(-2, 3)
]
for ci in range(-2, 3)
]
]
radius = (26501365 - rhombus) // cycle - 1
A = counts[2][2] if radius % 2 == 0 else counts[2][1]
B = counts[2][2] if radius % 2 == 1 else counts[2][1]
answer_2 = (
radius = (26501365 - rhombus) // cycle - 1
A = counts[2][2] if radius % 2 == 0 else counts[2][1]
B = counts[2][2] if radius % 2 == 1 else counts[2][1]
answer_2 = (
(radius + 1) * A
+ radius * B
+ 2 * radius * (radius + 1) // 2 * A
+ 2 * radius * (radius - 1) // 2 * B
+ sum(counts[i][j] for i, j in ((0, 2), (-1, 2), (2, 0), (2, -1)))
+ sum(counts[i][j] for i, j in ((0, 1), (0, 3), (-1, 1), (-1, 3))) * (radius + 1)
+ sum(counts[i][j] for i, j in ((0, 1), (0, 3), (-1, 1), (-1, 3)))
* (radius + 1)
+ sum(counts[i][j] for i, j in ((1, 1), (1, 3), (-2, 1), (-2, 3))) * radius
)
print(f"answer 2 (v1) is {answer_2}")
)
print(f"answer 2 (v1) is {answer_2}")
# version 2: fitting a polynomial
#
# the value we are interested in (26501365) can be written as R + K * C where R is the
# step at which we find the first rhombus, and K the repeat step, so instead of fitting
# for X values (R, R + K, R + 2 K), we are going to fit for (0, 1, 2), giving us much
# simpler equation for the a, b and c coefficient
#
# we get:
# - (a * 0² + b * 0 + c) = y1 => c = y1
# - (a * 1² + b * 1 + c) = y2 => a + b = y2 - y1
# => b = y2 - y1 - a
# - (a * 2² + b * 2 + c) = y3 => 4a + 2b = y3 - y1
# => 4a + 2(y2 - y1 - a) = y3 - y1
# => a = (y1 + y3) / 2 - y2
#
y1, y2, y3 = values
a, b, c = (y1 + y3) // 2 - y2, 2 * y2 - (3 * y1 + y3) // 2, y1
# version 2: fitting a polynomial
#
# the value we are interested in (26501365) can be written as R + K * C where R is the
# step at which we find the first rhombus, and K the repeat step, so instead of fitting
# for X values (R, R + K, R + 2 K), we are going to fit for (0, 1, 2), giving us much
# simpler equation for the a, b and c coefficient
#
# we get:
# - (a * 0² + b * 0 + c) = y1 => c = y1
# - (a * 1² + b * 1 + c) = y2 => a + b = y2 - y1
# => b = y2 - y1 - a
# - (a * 2² + b * 2 + c) = y3 => 4a + 2b = y3 - y1
# => 4a + 2(y2 - y1 - a) = y3 - y1
# => a = (y1 + y3) / 2 - y2
#
y1, y2, y3 = values
a, b, c = (y1 + y3) // 2 - y2, 2 * y2 - (3 * y1 + y3) // 2, y1
n = (26501365 - rhombus) // cycle
answer_2 = a * n * n + b * n + c
print(f"answer 2 (v2) is {answer_2}")
n = (26501365 - rhombus) // cycle
yield a * n * n + b * n + c

56
src/holt59/aoc/2023/day22.py
View File

@ -1,26 +1,23 @@
import itertools
import logging
import os
import string
import sys
from collections import defaultdict
from typing import Any, Iterator
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
def _name(i: int) -> str:
def _name(i: int) -> str:
if len(lines) < 26:
return string.ascii_uppercase[i]
return f"B{i:04d}"
def build_supports(
def build_supports(
bricks: list[tuple[tuple[int, int, int], tuple[int, int, int]]],
) -> tuple[dict[int, set[int]], dict[int, set[int]]]:
) -> tuple[dict[int, set[int]], dict[int, set[int]]]:
# 1. compute locations where a brick of sand will land after falling by processing
# them in sorted order of bottom z location
levels: dict[tuple[int, int, int], int] = defaultdict(lambda: -1)
@ -42,7 +39,9 @@ def build_supports(
# 2. compute the bricks that supports any brick
supported_by: dict[int, set[int]] = {}
supports: dict[int, set[int]] = {i_brick: set() for i_brick in range(len(bricks))}
supports: dict[int, set[int]] = {
i_brick: set() for i_brick in range(len(bricks))
}
for i_brick, ((sx, sy, sz), (ex, ey, ez)) in enumerate(bricks):
name = _name(i_brick)
@ -51,7 +50,7 @@ def build_supports(
for x, y in itertools.product(range(sx, ex + 1), range(sy, ey + 1))
if (v := levels[x, y, sz - 1]) != -1
}
logging.info(
self.logger.info(
f"{name} supported by {', '.join(map(_name, supported_by[i_brick]))}"
)
@ -60,9 +59,8 @@ def build_supports(
return supported_by, supports
bricks: list[tuple[tuple[int, int, int], tuple[int, int, int]]] = []
for line in lines:
bricks: list[tuple[tuple[int, int, int], tuple[int, int, int]]] = []
for line in lines:
bricks.append(
(
tuple(int(c) for c in line.split("~")[0].split(",")), # type: ignore
@ -70,20 +68,19 @@ for line in lines:
)
)
# sort bricks by bottom z position to compute supports
bricks = sorted(bricks, key=lambda b: b[0][-1])
supported_by, supports = build_supports(bricks)
# sort bricks by bottom z position to compute supports
bricks = sorted(bricks, key=lambda b: b[0][-1])
supported_by, supports = build_supports(bricks)
# part 1
answer_1 = len(bricks) - sum(
# part 1
yield len(bricks) - sum(
any(len(supported_by[supported]) == 1 for supported in supports_to)
for supports_to in supports.values()
)
print(f"answer 1 is {answer_1}")
)
# part 2
falling_in_chain: dict[int, set[int]] = {}
for i_brick in range(len(bricks)):
# part 2
falling_in_chain: dict[int, set[int]] = {}
for i_brick in range(len(bricks)):
to_disintegrate: set[int] = {
supported
for supported in supports[i_brick]
@ -100,12 +97,13 @@ for i_brick in range(len(bricks)):
for d_brick in to_disintegrate:
for supported in supports[d_brick]:
supported_by_copy[supported] = supported_by_copy[supported] - {d_brick}
supported_by_copy[supported] = supported_by_copy[supported] - {
d_brick
}
if not supported_by_copy[supported]:
to_disintegrate_v.add(supported)
to_disintegrate = to_disintegrate_v
answer_2 = sum(len(falling) for falling in falling_in_chain.values())
print(f"answer 2 is {answer_2}")
yield sum(len(falling) for falling in falling_in_chain.values())

56
src/holt59/aoc/2023/day23.py
View File

@ -1,11 +1,7 @@
import logging
import os
import sys
from collections import defaultdict
from typing import Literal, Sequence, TypeAlias, cast
from typing import Any, Iterator, Literal, Sequence, TypeAlias, cast
VERBOSE = os.getenv("AOC_VERBOSE") == "True"
logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
from ..base import BaseSolver
DirectionType: TypeAlias = Literal[">", "<", "^", "v", ".", "#"]
@ -35,6 +31,7 @@ def neighbors(
Compute neighbors of the given node, ignoring the given set of nodes and considering
that you can go uphill on slopes.
"""
n_rows, n_cols = len(grid), len(grid[0])
i, j = node
for di, dj in Neighbors[grid[i][j]]:
@ -103,11 +100,13 @@ def compute_direct_links(
return direct
def longest_path_length(
class Solver(BaseSolver):
def longest_path_length(
self,
links: dict[tuple[int, int], list[tuple[tuple[int, int], int]]],
start: tuple[int, int],
target: tuple[int, int],
) -> int:
) -> int:
max_distance: int = -1
queue: list[tuple[tuple[int, int], int, frozenset[tuple[int, int]]]] = [
(start, 0, frozenset({start}))
@ -129,39 +128,38 @@ def longest_path_length(
if reach not in path
)
logging.info(f"processed {nodes} nodes")
self.logger.info(f"processed {nodes} nodes")
return max_distance
def solve(self, input: str) -> Iterator[Any]:
lines = cast(list[Sequence[DirectionType]], input.splitlines())
lines = cast(list[Sequence[DirectionType]], sys.stdin.read().splitlines())
n_rows, n_cols = len(lines), len(lines[0])
start = (0, 1)
target = (len(lines) - 1, len(lines[0]) - 2)
start = (0, 1)
target = (len(lines) - 1, len(lines[0]) - 2)
direct_links: dict[tuple[int, int], list[tuple[tuple[int, int], int]]] = {
direct_links: dict[tuple[int, int], list[tuple[tuple[int, int], int]]] = {
start: [reachable(lines, start, target)]
}
direct_links.update(compute_direct_links(lines, direct_links[start][0][0], target))
}
direct_links.update(
compute_direct_links(lines, direct_links[start][0][0], target)
)
# part 1
answer_1 = longest_path_length(direct_links, start, target)
print(f"answer 1 is {answer_1}")
# part 1
yield self.longest_path_length(direct_links, start, target)
# part 2
reverse_links: dict[tuple[int, int], list[tuple[tuple[int, int], int]]] = defaultdict(
list
)
for origin, links in direct_links.items():
# part 2
reverse_links: dict[tuple[int, int], list[tuple[tuple[int, int], int]]] = (
defaultdict(list)
)
for origin, links in direct_links.items():
for destination, distance in links:
if origin != start:
reverse_links[destination].append((origin, distance))
links = {
links = {
k: direct_links.get(k, []) + reverse_links.get(k, [])
for k in direct_links.keys() | reverse_links.keys()
}
}
answer_2 = longest_path_length(links, start, target)
print(f"answer 2 is {answer_2}")
yield self.longest_path_length(links, start, target)

73
src/holt59/aoc/2023/day24.py
View File

@ -1,22 +1,29 @@
import sys
from typing import Any, Iterator
import numpy as np
from sympy import solve, symbols
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
positions = np.array(
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
positions = np.array(
[[int(c) for c in line.split("@")[0].strip().split(", ")] for line in lines]
)
velocities = np.array(
)
velocities = np.array(
[[int(c) for c in line.split("@")[1].strip().split(", ")] for line in lines]
)
)
# part 1
low, high = [7, 27] if len(positions) <= 10 else [200000000000000, 400000000000000]
# part 1
low, high = (
[7, 27] if len(positions) <= 10 else [200000000000000, 400000000000000]
)
count = 0
for i1, (p1, v1) in enumerate(zip(positions, velocities)):
count = 0
for i1, (p1, v1) in enumerate(zip(positions, velocities)):
p, r = p1[:2], v1[:2]
q, s = positions[i1 + 1 :, :2], velocities[i1 + 1 :, :2]
@ -31,33 +38,31 @@ for i1, (p1, v1) in enumerate(zip(positions, velocities)):
c = p + np.expand_dims(t, 1) * r
count += np.all((low <= c) & (c <= high), axis=1).sum()
yield count
answer_1 = count
print(f"answer 1 is {answer_1}")
# part 2
# equation
# p1 + t1 * v1 == p0 + t1 * v0
# p2 + t2 * v2 == p0 + t2 * v0
# p3 + t3 * v3 == p0 + t3 * v0
# ...
# pn + tn * vn == p0 + tn * v0
#
# part 2
# equation
# p1 + t1 * v1 == p0 + t1 * v0
# p2 + t2 * v2 == p0 + t2 * v0
# p3 + t3 * v3 == p0 + t3 * v0
# ...
# pn + tn * vn == p0 + tn * v0
#
# we can solve with only 3 lines since each lines contains 3
# equations (x / y / z), so 3 lines give 9 equations and 9
# variables: position (3), velocities (3) and times (3).
n = 3
# we can solve with only 3 lines since each lines contains 3
# equations (x / y / z), so 3 lines give 9 equations and 9
# variables: position (3), velocities (3) and times (3).
n = 3
x, y, z, vx, vy, vz, *ts = symbols(
x, y, z, vx, vy, vz, *ts = symbols(
"x y z vx vy vz " + " ".join(f"t{i}" for i in range(n + 1))
)
equations = []
for i1, ti in zip(range(n), ts):
for p, d, pi, di in zip((x, y, z), (vx, vy, vz), positions[i1], velocities[i1]):
)
equations = []
for i1, ti in zip(range(n), ts):
for p, d, pi, di in zip(
(x, y, z), (vx, vy, vz), positions[i1], velocities[i1]
):
equations.append(p + ti * d - pi - ti * di)
r = solve(equations, [x, y, z, vx, vy, vz] + list(ts), dict=True)[0]
answer_2 = r[x] + r[y] + r[z]
print(f"answer 2 is {answer_2}")
r = solve(equations, [x, y, z, vx, vy, vz] + list(ts), dict=True)[0]
yield r[x] + r[y] + r[z]

32
src/holt59/aoc/2023/day25.py
View File

@ -1,25 +1,25 @@
import sys
# pyright: reportUnknownMemberType=false
from typing import Any, Iterator
import networkx as nx
components = {
(p := line.split(": "))[0]: p[1].split() for line in sys.stdin.read().splitlines()
}
from ..base import BaseSolver
targets = {t for c in components for t in components[c] if t not in components}
graph = nx.Graph()
graph.add_edges_from((u, v) for u, vs in components.items() for v in vs)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
components = {
(p := line.split(": "))[0]: p[1].split() for line in input.splitlines()
}
cut = nx.minimum_edge_cut(graph)
graph.remove_edges_from(cut)
graph: "nx.Graph[str]" = nx.Graph()
graph.add_edges_from((u, v) for u, vs in components.items() for v in vs)
c1, c2 = nx.connected_components(graph)
cut = nx.minimum_edge_cut(graph)
graph.remove_edges_from(cut)
# part 1
answer_1 = len(c1) * len(c2)
print(f"answer 1 is {answer_1}")
c1, c2 = nx.connected_components(graph)
# part 2
answer_2 = ...
print(f"answer 2 is {answer_2}")
# part 1
yield len(c1) * len(c2)

24
src/holt59/aoc/2023/day3.py
View File

@ -1,15 +1,20 @@
import string
import sys
from collections import defaultdict
from typing import Any, Iterator
from ..base import BaseSolver
NOT_A_SYMBOL = "." + string.digits
lines = sys.stdin.read().splitlines()
values: list[int] = []
gears: dict[tuple[int, int], list[int]] = defaultdict(list)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
for i, line in enumerate(lines):
values: list[int] = []
gears: dict[tuple[int, int], list[int]] = defaultdict(list)
for i, line in enumerate(lines):
j = 0
while j < len(line):
# skip everything until a digit is found (start of a number)
@ -44,10 +49,5 @@ for i, line in enumerate(lines):
# continue starting from the end of the number
j = k
# part 1
answer_1 = sum(values)
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = sum(v1 * v2 for v1, v2 in filter(lambda vs: len(vs) == 2, gears.values()))
print(f"answer 2 is {answer_2}")
yield sum(values)
yield sum(v1 * v2 for v1, v2 in filter(lambda vs: len(vs) == 2, gears.values()))

29
src/holt59/aoc/2023/day4.py
View File

@ -1,5 +1,7 @@
import sys
from dataclasses import dataclass
from typing import Any, Iterator
from ..base import BaseSolver
@dataclass(frozen=True)
@ -9,10 +11,12 @@ class Card:
values: list[int]
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
cards: list[Card] = []
for line in lines:
cards: list[Card] = []
for line in lines:
id_part, e_part = line.split(":")
numbers_s, values_s = e_part.split("|")
cards.append(
@ -23,19 +27,18 @@ for line in lines:
)
)
winnings = [sum(1 for n in card.values if n in card.numbers) for card in cards]
winnings = [sum(1 for n in card.values if n in card.numbers) for card in cards]
# part 1
answer_1 = sum(2 ** (winning - 1) for winning in winnings if winning > 0)
print(f"answer 1 is {answer_1}")
# part 1
yield sum(2 ** (winning - 1) for winning in winnings if winning > 0)
# part 2
card2cards = {i: list(range(i + 1, i + w + 1)) for i, w in enumerate(winnings)}
card2values = {i: 0 for i in range(len(cards))}
# part 2
card2cards = {i: list(range(i + 1, i + w + 1)) for i, w in enumerate(winnings)}
card2values = {i: 0 for i in range(len(cards))}
for i in range(len(cards)):
for i in range(len(cards)):
card2values[i] += 1
for j in card2cards[i]:
card2values[j] += card2values[i]
print(f"answer 2 is {sum(card2values.values())}")
yield sum(card2values.values())

126
src/holt59/aoc/2023/day5.py
View File

@ -1,5 +1,6 @@
import sys
from typing import Sequence
from typing import Any, Iterator, Sequence
from ..base import BaseSolver
MAP_ORDER = [
"seed",
@ -12,55 +13,6 @@ MAP_ORDER = [
"location",
]
lines = sys.stdin.read().splitlines()
# mappings from one category to another, each list contains
# ranges stored as (source, target, length), ordered by start and
# completed to have no "hole"
maps: dict[tuple[str, str], list[tuple[int, int, int]]] = {}
# parsing
index = 2
while index < len(lines):
p1, _, p2 = lines[index].split()[0].split("-")
# extract the existing ranges from the file - we store as (source, target, length)
# whereas the file is in order (target, source, length)
index += 1
values: list[tuple[int, int, int]] = []
while index < len(lines) and lines[index]:
n1, n2, n3 = lines[index].split()
values.append((int(n2), int(n1), int(n3)))
index += 1
# sort by source value
values.sort()
# add a 'fake' interval starting at 0 if missing
if values[0][0] != 0:
values.insert(0, (0, 0, values[0][0]))
# fill gaps between intervals
for i in range(len(values) - 1):
next_start = values[i + 1][0]
end = values[i][0] + values[i][2]
if next_start != end:
values.insert(
i + 1,
(end, end, next_start - end),
)
# add an interval covering values up to at least 2**32 at the end
last_start, _, last_length = values[-1]
values.append((last_start + last_length, last_start + last_length, 2**32))
assert all(v1[0] + v1[2] == v2[0] for v1, v2 in zip(values[:-1], values[1:]))
assert values[0][0] == 0
assert values[-1][0] + values[-1][-1] >= 2**32
maps[p1, p2] = values
index += 1
def find_range(
values: tuple[int, int], map: list[tuple[int, int, int]]
@ -111,19 +63,71 @@ def find_range(
return ranges
def find_location_ranges(seeds: Sequence[tuple[int, int]]) -> Sequence[tuple[int, int]]:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# mappings from one category to another, each list contains
# ranges stored as (source, target, length), ordered by start and
# completed to have no "hole"
maps: dict[tuple[str, str], list[tuple[int, int, int]]] = {}
def find_location_ranges(
seeds: Sequence[tuple[int, int]],
) -> Sequence[tuple[int, int]]:
for map1, map2 in zip(MAP_ORDER[:-1], MAP_ORDER[1:]):
seeds = [s2 for s1 in seeds for s2 in find_range(s1, maps[map1, map2])]
return seeds
# parsing
index = 2
while index < len(lines):
p1, _, p2 = lines[index].split()[0].split("-")
# part 1 - use find_range() with range of length 1
seeds_p1 = [(int(s), 1) for s in lines[0].split(":")[1].strip().split()]
answer_1 = min(start for start, _ in find_location_ranges(seeds_p1))
print(f"answer 1 is {answer_1}")
# extract the existing ranges from the file - we store as (source, target, length)
# whereas the file is in order (target, source, length)
index += 1
values: list[tuple[int, int, int]] = []
while index < len(lines) and lines[index]:
n1, n2, n3 = lines[index].split()
values.append((int(n2), int(n1), int(n3)))
index += 1
# # part 2
parts = lines[0].split(":")[1].strip().split()
seeds_p2 = [(int(s), int(e)) for s, e in zip(parts[::2], parts[1::2])]
answer_2 = min(start for start, _ in find_location_ranges(seeds_p2))
print(f"answer 2 is {answer_2}")
# sort by source value
values.sort()
# add a 'fake' interval starting at 0 if missing
if values[0][0] != 0:
values.insert(0, (0, 0, values[0][0]))
# fill gaps between intervals
for i in range(len(values) - 1):
next_start = values[i + 1][0]
end = values[i][0] + values[i][2]
if next_start != end:
values.insert(
i + 1,
(end, end, next_start - end),
)
# add an interval covering values up to at least 2**32 at the end
last_start, _, last_length = values[-1]
values.append((last_start + last_length, last_start + last_length, 2**32))
assert all(
v1[0] + v1[2] == v2[0] for v1, v2 in zip(values[:-1], values[1:])
)
assert values[0][0] == 0
assert values[-1][0] + values[-1][-1] >= 2**32
maps[p1, p2] = values
index += 1
# part 1 - use find_range() with range of length 1
seeds_p1 = [(int(s), 1) for s in lines[0].split(":")[1].strip().split()]
yield min(start for start, _ in find_location_ranges(seeds_p1))
# # part 2
parts = lines[0].split(":")[1].strip().split()
seeds_p2 = [(int(s), int(e)) for s, e in zip(parts[::2], parts[1::2])]
yield min(start for start, _ in find_location_ranges(seeds_p2))

30
src/holt59/aoc/2023/day6.py
View File

@ -1,5 +1,7 @@
import math
import sys
from typing import Any, Iterator
from ..base import BaseSolver
def extreme_times_to_beat(time: int, distance: int) -> tuple[int, int]:
@ -25,23 +27,23 @@ def extreme_times_to_beat(time: int, distance: int) -> tuple[int, int]:
return t1, t2
lines = sys.stdin.read().splitlines()
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
# part 1
times = list(map(int, lines[0].split()[1:]))
distances = list(map(int, lines[1].split()[1:]))
answer_1 = math.prod(
# part 1
times = list(map(int, lines[0].split()[1:]))
distances = list(map(int, lines[1].split()[1:]))
yield math.prod(
t2 - t1 + 1
for t1, t2 in (
extreme_times_to_beat(time, distance)
for time, distance in zip(times, distances)
)
)
print(f"answer 1 is {answer_1}")
)
# part 2
time = int(lines[0].split(":")[1].strip().replace(" ", ""))
distance = int(lines[1].split(":")[1].strip().replace(" ", ""))
t1, t2 = extreme_times_to_beat(time, distance)
answer_2 = t2 - t1 + 1
print(f"answer 2 is {answer_2}")
# part 2
time = int(lines[0].split(":")[1].strip().replace(" ", ""))
distance = int(lines[1].split(":")[1].strip().replace(" ", ""))
t1, t2 = extreme_times_to_beat(time, distance)
yield t2 - t1 + 1

29
src/holt59/aoc/2023/day7.py
View File

@ -1,5 +1,7 @@
import sys
from collections import Counter, defaultdict
from typing import Any, Iterator
from ..base import BaseSolver
class HandTypes:
@ -32,18 +34,17 @@ def extract_key(hand: str, values: dict[str, int], joker: str = "0") -> tuple[in
)
lines = sys.stdin.read().splitlines()
cards = [(t[0], int(t[1])) for line in lines if (t := line.split())]
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
cards = [(t[0], int(t[1])) for line in lines if (t := line.split())]
# part 1
values = {card: value for value, card in enumerate("23456789TJQKA")}
cards.sort(key=lambda cv: extract_key(cv[0], values=values))
yield sum(rank * value for rank, (_, value) in enumerate(cards, start=1))
# part 1
values = {card: value for value, card in enumerate("23456789TJQKA")}
cards.sort(key=lambda cv: extract_key(cv[0], values=values))
answer_1 = sum(rank * value for rank, (_, value) in enumerate(cards, start=1))
print(f"answer 1 is {answer_1}")
# part 2
values = {card: value for value, card in enumerate("J23456789TQKA")}
cards.sort(key=lambda cv: extract_key(cv[0], values=values, joker="J"))
answer_2 = sum(rank * value for rank, (_, value) in enumerate(cards, start=1))
print(f"answer 2 is {answer_2}")
# part 2
values = {card: value for value, card in enumerate("J23456789TQKA")}
cards.sort(key=lambda cv: extract_key(cv[0], values=values, joker="J"))
yield sum(rank * value for rank, (_, value) in enumerate(cards, start=1))

29
src/holt59/aoc/2023/day8.py
View File

@ -1,29 +1,30 @@
import itertools
import math
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
sequence = lines[0]
nodes = {
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
sequence = lines[0]
nodes = {
p[0]: {d: n for d, n in zip("LR", p[1].strip("()").split(", "))}
for line in lines[2:]
if (p := line.split(" = "))
}
}
def path(start: str):
def path(start: str):
path = [start]
it_seq = iter(itertools.cycle(sequence))
while not path[-1].endswith("Z"):
path.append(nodes[path[-1]][next(it_seq)])
return path
# part 1
yield len(path(next(node for node in nodes if node.endswith("A")))) - 1
# part 1
answer_1 = len(path(next(node for node in nodes if node.endswith("A")))) - 1
print(f"answer 1 is {answer_1}")
# part 2
answer_2 = math.lcm(*(len(path(node)) - 1 for node in nodes if node.endswith("A")))
print(f"answer 2 is {answer_2}")
# part 2
yield math.lcm(*(len(path(node)) - 1 for node in nodes if node.endswith("A")))

31
src/holt59/aoc/2023/day9.py
View File

@ -1,15 +1,22 @@
import sys
from typing import Any, Iterator
lines = sys.stdin.read().splitlines()
from ..base import BaseSolver
data = [[int(c) for c in line.split()] for line in lines]
right_values: list[int] = []
left_values: list[int] = []
for values in data:
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
lines = input.splitlines()
data = [[int(c) for c in line.split()] for line in lines]
right_values: list[int] = []
left_values: list[int] = []
for values in data:
diffs = [values]
while any(d != 0 for d in diffs[-1]):
diffs.append([rhs - lhs for lhs, rhs in zip(diffs[-1][:-1], diffs[-1][1:])])
diffs.append(
[rhs - lhs for lhs, rhs in zip(diffs[-1][:-1], diffs[-1][1:])]
)
rhs: list[int] = [0]
lhs: list[int] = [0]
@ -20,10 +27,8 @@ for values in data:
right_values.append(rhs[-1])
left_values.append(lhs[-1])
# part 1
answer_1 = sum(right_values)
print(f"answer 1 is {answer_1}")
# part 1
yield sum(right_values)
# part 2
answer_2 = sum(left_values)
print(f"answer 2 is {answer_2}")
# part 2
yield sum(left_values)

21
src/holt59/aoc/2024/day1.py
View File

@ -1,14 +1,17 @@
import sys
from collections import Counter
from typing import Any, Iterator
values = list(map(int, sys.stdin.read().strip().split()))
from ..base import BaseSolver
column_1 = sorted(values[::2])
column_2 = sorted(values[1::2])
counter_2 = Counter(column_2)
answer_1 = sum(abs(v1 - v2) for v1, v2 in zip(column_1, column_2, strict=True))
answer_2 = sum(value * counter_2.get(value, 0) for value in column_1)
class Solver(BaseSolver):
def solve(self, input: str) -> Iterator[Any]:
values = list(map(int, input.split()))
print(f"answer 1 is {answer_1}")
print(f"answer 2 is {answer_2}")
column_1 = sorted(values[::2])
column_2 = sorted(values[1::2])
yield sum(abs(v1 - v2) for v1, v2 in zip(column_1, column_2, strict=True))
counter_2 = Counter(column_2)
yield sum(value * counter_2.get(value, 0) for value in column_1)

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