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Solve day 14 part 2 not opti
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1 changed files with 62 additions and 18 deletions
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@ -13,7 +13,7 @@ def main(filename: str, expected_part_1: int = None, expected_part_2: int = None
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if expected_part_1:
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assert expected_part_1 == solution_part_1
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solution_part_2 = solve_part_2(data)
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solution_part_2 = solve_part_2(data, deepest_wall)
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print(f"2. Found {solution_part_2}")
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if expected_part_2:
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assert expected_part_2 == solution_part_2
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@ -55,30 +55,74 @@ def parse_data(data: list[str]) -> Walls:
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def solve_part_1(walls: Walls, deepest_wall: int) -> int:
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sand_source = (500, 0)
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sand: Walls = set()
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while True:
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sand_x, sand_y = sand_source
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while sand_y < deepest_wall:
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if (sand_x, sand_y + 1) not in walls | sand:
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sand_y += 1
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elif (sand_x - 1, sand_y + 1) not in walls | sand:
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sand_x -= 1
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sand_y += 1
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elif (sand_x + 1, sand_y + 1) not in walls | sand:
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sand_x += 1
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sand_y += 1
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else:
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sand.add((sand_x, sand_y))
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break
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sand_x, sand_y = compute_final_position(walls, sand, deepest_wall)
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if sand_y >= deepest_wall:
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print_grid(493, 503, 10, walls, sand)
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return len(sand)
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sand.add((sand_x, sand_y))
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def solve_part_2(walls: Walls) -> int:
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return 0
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def compute_final_position(
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walls: Walls, sand: Walls, deepest_wall: int, floor_level: int | None = None
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) -> Point:
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sand_x, sand_y = 500, 0
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while sand_y < deepest_wall:
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floor: Walls = set()
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if floor_level:
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floor = {
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(sand_x - 1, floor_level),
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(sand_x, floor_level),
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(sand_x + 1, floor_level),
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}
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if (sand_x, sand_y + 1) not in walls | sand | floor:
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sand_y += 1
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elif (sand_x - 1, sand_y + 1) not in walls | sand | floor:
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sand_x -= 1
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sand_y += 1
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elif (sand_x + 1, sand_y + 1) not in walls | sand | floor:
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sand_x += 1
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sand_y += 1
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else:
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return sand_x, sand_y
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return sand_x, sand_y
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def print_grid(
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min_x: int,
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max_x: int,
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max_y: int,
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walls: Walls,
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sand: Walls,
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floor_level: int | None = None,
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) -> None:
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for y in range(0, max_y + 1):
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for x in range(min_x, max_x + 1):
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if (x, y) == (500, 0):
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print("+", end="")
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elif y == floor_level:
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print("#", end="")
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elif (x, y) in walls:
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print("#", end="")
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elif (x, y) in sand:
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print("o", end="")
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else:
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print(".", end="")
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print()
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def solve_part_2(walls: Walls, deepest_wall: int) -> int:
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sand: Walls = set()
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sand_x, sand_y = 0, 0
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while (sand_x, sand_y) != (500, 0):
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sand_x, sand_y = compute_final_position(
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walls, sand, deepest_wall + 2, deepest_wall + 2
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)
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sand.add((sand_x, sand_y))
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return len(sand)
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if __name__ == "__main__":
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main("inputs/day14-test1", expected_part_1=24)
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main("inputs/day14-test1", expected_part_1=24, expected_part_2=93)
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main("inputs/day14", expected_part_1=843)
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