Start fixing 2022 for new API.

src/holt59/aoc/2022/day1.py

@@ -1,7 +1,12 @@
-import sys
+from typing import Any, Iterator
 
-blocks = sys.stdin.read().split("\n\n")
+from ..base import BaseSolver
+
+
+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)
 
-print(f"answer 1 is {values[-1]}")
+        yield values[-1]
-print(f"answer 2 is {sum(values[-3:])}")
+        yield sum(values[-3:])

src/holt59/aoc/2022/day10.py

@@ -1,10 +1,13 @@
-import sys
+from typing import Any, Iterator
 
-lines = sys.stdin.read().splitlines()
+from ..base import BaseSolver
 
-cycle = 1
-x = 1
 
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = [line.strip() for line in input.splitlines()]
+
+        cycle, x = 1, 1
         values = {cycle: x}
 
         for line in lines:
@@ -23,16 +26,18 @@ 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}")
+        yield answer_1
 
-
+        yield (
-for i in range(6):
+            "\n"
-    for j in range(40):
+            + "\n".join(
-        v = values[1 + i * 40 + j]
+                "".join(
-
+                    "#"
-        if j >= v - 1 and j <= v + 1:
+                    if j >= (v := values[1 + i * 40 + j]) - 1 and j <= v + 1
-            print("#", end="")
+                    else "."
-        else:
+                    for j in range(40)
-            print(".", end="")
+                )
-
+                for i in range(6)
-    print()
+            )
+            + "\n"
+        )

src/holt59/aoc/2022/day11.py

@@ -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:
@@ -119,13 +120,14 @@ 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(
+        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
@@ -136,7 +138,10 @@ print(f"answer 1 is {answer_1}")
         # 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(
+        yield monkey_business(
-    run(copy.deepcopy(monkeys), 10_000, me_worry_fn=lambda w: w % total_test_value)
+            run(
+                copy.deepcopy(monkeys),
+                10_000,
+                me_worry_fn=lambda w: w % total_test_value,
+            )
         )
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2022/day12.py

@@ -1,6 +1,7 @@
 import heapq
-import sys
+from typing import Any, Callable, Iterator, TypeVar
-from typing import 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]]:
@@ -118,7 +95,34 @@ def neighbors(
 
 # === main code ===
 
-lines = sys.stdin.read().splitlines()
+
+class Solver(BaseSolver):
+    def print_path(self, 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])
+
+        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]
 
@@ -145,19 +149,20 @@ assert end is not None
         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
+            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
 
-print_path(path_1, n_rows=len(grid), n_cols=len(grid[0]))
+        self.print_path(path_1, n_rows=len(grid), n_cols=len(grid[0]))
+        yield lengths_1[end] - 1
 
-print(f"answer 1 is {lengths_1[end] - 1}")
+        lengths_2, _ = dijkstra(
-
+            start=end,
-lengths_2, parents_2 = dijkstra(
+            neighbors=lambda n: neighbors(grid, n, False),
-    start=end, neighbors=lambda n: neighbors(grid, n, False), cost=lambda lhs, rhs: 1
+            cost=lambda lhs, rhs: 1,
         )
-answer_2 = min(lengths_2.get(start, float("inf")) for start in start_s)
+        yield min(lengths_2.get(start, float("inf")) for start in start_s)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2022/day13.py

@@ -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")
+from ..base import BaseSolver
-
-pairs = [tuple(json.loads(p) for p in block.split("\n")) for block in blocks]
 
 Packet: TypeAlias = list[int | list["Packet"]]
 
@@ -28,8 +25,12 @@ 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)
+class Solver(BaseSolver):
-print(f"answer_1 is {answer_1}")
+    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]
+
+        yield sum(i + 1 for i, (lhs, rhs) in enumerate(pairs) if compare(lhs, rhs) > 0)
 
         dividers = [[[2]], [[6]]]
 
@@ -38,4 +39,4 @@ packets.extend(dividers)
         packets = list(reversed(sorted(packets, key=cmp_to_key(compare))))
 
         d_index = [packets.index(d) + 1 for d in dividers]
-print(f"answer 2 is {d_index[0] * d_index[1]}")
+        yield d_index[0] * d_index[1]

src/holt59/aoc/2022/day14.py

@@ -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],
@@ -84,19 +65,44 @@ def flow(
 
 # === inputs ===
 
-lines = sys.stdin.read().splitlines()
+
+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:
             for start, end in zip(path[:-1], path[1:]):
@@ -109,24 +115,17 @@ for path in paths:
                     for y in range(y_start, y_end):
                         blocks[x, y] = Cell.ROCK
 
-print_blocks(blocks)
+        self.print_blocks(blocks)
-print()
 
-x_min, y_min, x_max, y_max = (
+        y_max = max(y for _, y in blocks)
-    min(x for x, _ in blocks),
-    0,
-    max(x for x, _ in blocks),
-    max(y for _, y in blocks),
-)
 
         # === part 1 ===
 
         blocks_1 = flow(
             blocks.copy(), stop_fn=lambda x, y: y > y_max, fill_fn=lambda x, y: Cell.AIR
         )
-print_blocks(blocks_1)
+        self.print_blocks(blocks_1)
-print(f"answer 1 is {sum(v == Cell.SAND for v in blocks_1.values())}")
+        yield sum(v == Cell.SAND for v in blocks_1.values())
-print()
 
         # === part 2 ===
 
@@ -136,5 +135,5 @@ blocks_2 = flow(
             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)
+        self.print_blocks(blocks_2)
-print(f"answer 2 is {sum(v == Cell.SAND for v in blocks_2.values())}")
+        yield sum(v == Cell.SAND for v in blocks_2.values())

src/holt59/aoc/2022/day15.py

@@ -1,4 +1,3 @@
-import sys
 from typing import Any, Iterator
 
 import numpy as np
@@ -62,8 +61,9 @@ class Solver(BaseSolver):
         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}"
+                m.abs(x - sx) + m.abs(y - sy) >= d + 1,  # type: ignore
-            )  # type: ignore
+                ctname=f"ct_{sx}_{sy}",
+            )
 
         m.set_objective("min", x + y)
 

src/holt59/aoc/2022/day16.py

@@ -5,10 +5,12 @@ 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

src/holt59/aoc/2022/day17.py

@@ -1,8 +1,10 @@
 import sys
-from typing import Sequence, TypeVar
+from typing import Any, Iterator, Sequence, TypeVar
 
 import numpy as np
 
+from ..base import BaseSolver
+
 T = TypeVar("T")
 
 

src/holt59/aoc/2022/day18.py

@@ -1,7 +1,10 @@
 import sys
+from typing import Any, Iterator
 
 import numpy as np
 
+from ..base import BaseSolver
+
 xyz = np.asarray(
     [
         tuple(int(x) for x in row.split(","))  # type: ignore

src/holt59/aoc/2022/day19.py

@@ -1,10 +1,12 @@
 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",

src/holt59/aoc/2022/day2.py

@@ -1,4 +1,6 @@
-import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 
 def score_1(ux: int, vx: int) -> int:
@@ -33,7 +35,9 @@ 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
@@ -47,7 +51,7 @@ lines = sys.stdin.readlines()
         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)}")
+        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)}")
+        yield sum(score_2(*v) for v in values)

src/holt59/aoc/2022/day20.py

@@ -1,6 +1,9 @@
 from __future__ import annotations
 
 import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 
 class Number:

src/holt59/aoc/2022/day21.py

@@ -1,6 +1,8 @@
 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:

src/holt59/aoc/2022/day22.py

@@ -1,9 +1,11 @@
 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}
 

src/holt59/aoc/2022/day23.py

@@ -1,6 +1,9 @@
 import itertools
 import sys
 from collections import defaultdict
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 Directions = list[
     tuple[

src/holt59/aoc/2022/day24.py

@@ -2,6 +2,9 @@ import heapq
 import math
 import sys
 from collections import defaultdict
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2022/day25.py

@@ -1,4 +1,7 @@
 import sys
+from typing import Any, Iterator
+
+from ..base import BaseSolver
 
 lines = sys.stdin.read().splitlines()
 

src/holt59/aoc/2022/day3.py

@@ -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
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = [line.strip() for line in input.splitlines()]
 
         # extract content of each part
-parts = [(set(line[: len(line) // 2]), set(line[len(line) // 2 :])) for line in lines]
+        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)}
 
         # part 1
-part1 = sum(priorities[c] for p1, p2 in parts for c in p1.intersection(p2))
+        yield sum(priorities[c] for p1, p2 in parts for c in p1.intersection(p2))
-print(f"answer 1 is {part1}")
 
         # part 2
         n_per_group = 3
-part2 = sum(
+        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}")

src/holt59/aoc/2022/day4.py

@@ -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)
+        sections = [
-print(f"answer 1 is {answer_1}")
+            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)
+        yield sum(s1.issubset(s2) or s2.issubset(s1) for s1, s2 in sections)
-print(f"answer 1 is {answer_2}")
+        yield sum(bool(s1.intersection(s2)) for s1, s2 in sections)

src/holt59/aoc/2022/day5.py

@@ -1,7 +1,12 @@
 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
+
+
+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()}
 
@@ -34,8 +39,5 @@ for move in moves_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())
+        yield "".join(s[-1] for s in blocks_1.values())
-print(f"answer 1 is {answer_1}")
+        yield "".join(s[-1] for s in blocks_2.values())
-
-answer_2 = "".join(s[-1] for s in blocks_2.values())
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2022/day6.py

@@ -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()
+class Solver(BaseSolver):
-
+    def solve(self, input: str) -> Iterator[Any]:
-
+        yield index_of_first_n_differents(input, 4)
-print(f"answer 1 is {index_of_first_n_differents(data, 4)}")
+        yield index_of_first_n_differents(input, 14)
-print(f"answer 2 is {index_of_first_n_differents(data, 14)}")

src/holt59/aoc/2022/day7.py

@@ -1,7 +1,12 @@
-import sys
 from pathlib import Path
+from typing import Any, Iterator
 
-lines = sys.stdin.read().splitlines()
+from ..base import BaseSolver
+
+
+class Solver(BaseSolver):
+    def solve(self, input: str) -> Iterator[Any]:
+        lines = [line.strip() for line in input.splitlines()]
 
         # we are going to use Path to create path and go up/down in the file tree since it
         # implements everything we need
@@ -53,7 +58,6 @@ for line in lines[1:]:
                 trees[cur_path].append(path)
                 sizes[path] = size
 
-
         def compute_size(path: Path) -> int:
             size = sizes[path]
 
@@ -62,12 +66,10 @@ 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}
 
         # part 1
-answer_1 = sum(size for size in acc_sizes.values() if size <= 100_000)
+        yield 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
@@ -76,5 +78,4 @@ free_space = total_space - acc_sizes[base_path]
 
         to_free_space = update_space - free_space
 
-answer_2 = min(size for size in acc_sizes.values() if size >= to_free_space)
+        yield min(size for size in acc_sizes.values() if size >= to_free_space)
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2022/day8.py

@@ -1,9 +1,14 @@
-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
+
+
+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])
 
@@ -22,9 +27,7 @@ highest_trees[1:-1, 1:-1] = [
             for i in range(1, trees.shape[0] - 1)
         ]
 
-answer_1 = (highest_trees.min(axis=2) < trees).sum()
+        yield (highest_trees.min(axis=2) < trees).sum()
-print(f"answer 1 is {answer_1}")
-
 
         def viewing_distance(row_of_trees: NDArray[np.int_], value: int) -> int:
             w = np.where(row_of_trees >= value)[0]
@@ -34,7 +37,6 @@ 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, :] = [
@@ -49,5 +51,4 @@ v_distances[1:-1, 1:-1, :] = [
             ]
             for i in range(1, trees.shape[0] - 1)
         ]
-answer_2 = np.prod(v_distances, axis=2).max()
+        yield np.prod(v_distances, axis=2).max()
-print(f"answer 2 is {answer_2}")

src/holt59/aoc/2022/day9.py

@@ -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] = []
+        commands = list(
-for line in lines:
+            it.chain(*(p[0] * int(p[1]) for line in lines if (p := line.split())))
-    d, c = line.split()
+        )
-    commands.extend(d * int(c))
 
-
+        yield len(set(run(commands, n_blocks=2)))
-visited_1 = run(commands, n_blocks=2)
+        yield len(set(run(commands, n_blocks=10)))
-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))}")

src/holt59/aoc/2023/day25.py

@@ -1,3 +1,5 @@
+# pyright: reportUnknownMemberType=false
+
 from typing import Any, Iterator
 
 import networkx as nx