Day 22 part 1.
This commit is contained in:
Mikael CAPELLE
parent
3934dfd152
commit
8d7a20f575
139
2022/day22.py
139
2022/day22.py
@ -5,8 +5,8 @@ import sys
|
||||
|
||||
import numpy as np
|
||||
|
||||
EMPTY = 0
|
||||
VOID = 1
|
||||
VOID = 0
|
||||
EMPTY = 1
|
||||
WALL = 2
|
||||
TILE_FROM_CHAR = {" ": VOID, ".": EMPTY, "#": WALL}
|
||||
|
||||
@ -16,7 +16,7 @@ board_map_s, direction_s = sys.stdin.read().split("\n\n")
|
||||
# board
|
||||
board_lines = board_map_s.splitlines()
|
||||
max_line = max(len(line) for line in board_lines)
|
||||
board_map = np.array(
|
||||
board = np.array(
|
||||
[
|
||||
[TILE_FROM_CHAR[c] for c in row] + [VOID] * (max_line - len(row))
|
||||
for row in board_map_s.splitlines()
|
||||
@ -27,12 +27,135 @@ directions = [
|
||||
int(p1) if p2 else p1 for p1, p2 in re.findall(R"(([0-9])+|L|R)", direction_s)
|
||||
]
|
||||
|
||||
invert = False
|
||||
|
||||
y0 = 0
|
||||
x0 = np.where(board_map[0] == EMPTY)[0][0]
|
||||
r0 = "R"
|
||||
print(y0, x0)
|
||||
x0 = np.where(board[0] == EMPTY)[0][0]
|
||||
r0 = "E"
|
||||
|
||||
if invert:
|
||||
board = board[::-1, ::-1]
|
||||
y0 = board.shape[0] - 1
|
||||
x0 = np.where(board[-1, :] == EMPTY)[0][-1]
|
||||
r0 = "W"
|
||||
# print(
|
||||
# "\n".join(
|
||||
# "".join(next(k for k, v in TILE_FROM_CHAR.items() if v == c) for c in row)
|
||||
# for row in board
|
||||
# )
|
||||
# )
|
||||
|
||||
# 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
|
||||
|
||||
print(y0, x0, r0)
|
||||
|
||||
for direction in directions:
|
||||
# print(f"{y0} {x0} {r0} ({direction})")
|
||||
# r1 = {"N": "S", "S": "N", "W": "E", "E": "W"}[r0]
|
||||
# print(f"{board.shape[0] - y0 - 1} {board.shape[1] - x0 - 1} {r1} ({direction})")
|
||||
|
||||
if isinstance(direction, int):
|
||||
if r0 == "R":
|
||||
x0 = np.argmax(board_map[y0, x0 + 1 :])
|
||||
while direction > 0:
|
||||
if r0 == "E":
|
||||
xi = np.where(board[y0, x0 + 1 : x0 + direction + 1] == WALL)[0]
|
||||
# if y0 == 12 and x0 == 81:
|
||||
# print(
|
||||
# xi,
|
||||
# board[y0, x0 + 1 : x0 + direction],
|
||||
# board[y0, x0 + direction],
|
||||
# )
|
||||
if len(xi):
|
||||
# print("E1")
|
||||
x0 = x0 + xi[0]
|
||||
direction = 0
|
||||
elif (
|
||||
x0 + direction < board.shape[1]
|
||||
and board[y0, x0 + direction] == EMPTY
|
||||
):
|
||||
# print("E2")
|
||||
x0 = x0 + direction
|
||||
direction = 0
|
||||
elif board[y0, row_first_non_void[y0]] == WALL:
|
||||
# print("E3")
|
||||
x0 = row_last_non_void[y0]
|
||||
direction = 0
|
||||
else:
|
||||
# print("E4")
|
||||
direction = direction - (row_last_non_void[y0] - x0) - 1
|
||||
x0 = row_first_non_void[y0]
|
||||
elif r0 == "S":
|
||||
yi = np.where(board[y0 + 1 : y0 + direction + 1, x0] == WALL)[0]
|
||||
if len(yi):
|
||||
# print("S1")
|
||||
y0 = y0 + yi[0]
|
||||
direction = 0
|
||||
elif (
|
||||
y0 + direction < board.shape[0]
|
||||
and board[y0 + direction, x0] == EMPTY
|
||||
):
|
||||
# print("S2")
|
||||
y0 = y0 + direction
|
||||
direction = 0
|
||||
elif board[col_first_non_void[x0], x0] == WALL:
|
||||
print("S3")
|
||||
y0 = col_last_non_void[x0]
|
||||
direction = 0
|
||||
else:
|
||||
# print("S4")
|
||||
direction = direction - (col_last_non_void[x0] - y0) - 1
|
||||
y0 = col_first_non_void[x0]
|
||||
elif r0 == "W":
|
||||
left = max(x0 - direction - 1, 0)
|
||||
xi = np.where(board[y0, left:x0] == WALL)[0]
|
||||
if len(xi):
|
||||
x0 = left + xi[-1] + 1
|
||||
direction = 0
|
||||
elif x0 - direction >= 0 and board[y0, x0 - direction] == EMPTY:
|
||||
x0 = x0 - direction
|
||||
direction = 0
|
||||
elif board[y0, row_last_non_void[y0]] == WALL:
|
||||
x0 = row_first_non_void[y0]
|
||||
direction = 0
|
||||
else:
|
||||
# print("W", x0, row_first_non_void[y0], direction)
|
||||
direction = direction - (x0 - row_first_non_void[y0]) - 1
|
||||
x0 = row_last_non_void[y0]
|
||||
elif r0 == "N":
|
||||
top = max(y0 - direction - 1, 0)
|
||||
yi = np.where(board[top:y0, x0] == WALL)[0]
|
||||
if len(yi):
|
||||
y0 = top + yi[-1] + 1
|
||||
direction = 0
|
||||
elif y0 - direction >= 0 and board[y0 - direction, x0] == EMPTY:
|
||||
y0 = y0 - direction
|
||||
direction = 0
|
||||
elif board[col_last_non_void[x0], x0] == WALL:
|
||||
y0 = col_first_non_void[x0]
|
||||
direction = 0
|
||||
else:
|
||||
direction = direction - (y0 - col_first_non_void[x0]) - 1
|
||||
y0 = col_last_non_void[x0]
|
||||
else:
|
||||
r0 = {
|
||||
"E": {"L": "N", "R": "S"},
|
||||
"N": {"L": "W", "R": "E"},
|
||||
"W": {"L": "S", "R": "N"},
|
||||
"S": {"L": "E", "R": "W"},
|
||||
}[r0][direction]
|
||||
|
||||
if invert:
|
||||
print(y0, x0, r0, "->", end=" ")
|
||||
x0, y0, r0 = (
|
||||
board.shape[1] - x0 - 1,
|
||||
board.shape[0] - y0 - 1,
|
||||
{"N": "S", "S": "N", "W": "E", "E": "W"}[r0],
|
||||
)
|
||||
print(y0, x0, r0)
|
||||
|
||||
score = {"E": 0, "S": 1, "W": 2, "N": 3}
|
||||
answer_1 = 1000 * (1 + y0) + 4 * (1 + x0) + score[r0]
|
||||
print(f"answer 1 is {answer_1}")
|
||||
|
||||
Loading…
Reference in New Issue
Block a user