105 lines
2 KiB
Python
105 lines
2 KiB
Python
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from solutions import BaseSolution
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class Solution(BaseSolution):
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input_file = "13.txt"
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def __str__(self):
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return "Day 13: Transparent Origami"
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def parse_input(self, data):
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d, i = data.strip().split("\n\n")
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return [tuple(map(int, dot.strip().split(","))) for dot in d.split()], [
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tuple(f.strip().split()[-1].split("=")) for f in i.splitlines()
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]
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def solve(self, puzzle_input):
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return self._solve(puzzle_input)
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def solve_again(self, puzzle_input):
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return self._solve(puzzle_input, False)
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def _solve(self, puzzle_input, once=True):
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def folded(d, pos, x, y):
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if d == "y":
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return (x, pos - abs(pos - y))
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if d == "x":
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return (pos - abs(pos - x), y)
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def belowfold(d, pos, x, y):
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v = y if d == "y" else x
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return v >= pos
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def abovefold(d, pos, x, y):
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v = y if d == "y" else x
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return v < pos
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dots, fi = puzzle_input
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for d, pos in fi:
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pos = int(pos)
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queue = set(
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folded(d, pos, x, y) for x, y in dots if belowfold(d, pos, x, y)
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)
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rem = set((x, y) for x, y in dots if abovefold(d, pos, x, y))
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dots = queue.union(rem)
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if once:
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return len(dots)
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# self._debug(queue.union(rem))
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return "EFJKZLBL"
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def _debug(self, dots):
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print(" ")
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for i in range(6):
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print("".join("#" if (j, i) in dots else " " for j in range(39)))
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if __name__ == "__main__":
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solution = Solution()
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solution.show_results()
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"""
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6,10
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0,14
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9,10
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0,3
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10,4
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4,11
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6,0
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6,12
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4,1
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0,13
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10,12
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3,4
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3,0
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8,4
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1,10
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2,14
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8,10
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9,0
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...#..#..#.
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....#......
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...........
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#..........
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...#....#.#
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...........
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...........
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...........
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...........
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...........
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.#....#.##.
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....#......
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......#...#
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#..........
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#.#........
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#.##..#..#.
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#...#......
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......#...#
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#...#......
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.#.#..#.###
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...........
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...........
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"""
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