generated from public/aoc_template
57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
from __future__ import annotations
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from tools.aoc import AOCDay
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from tools.coordinate import Coordinate, Polygon
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from typing import Any, Iterable
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DIRECTIONS = [Coordinate(1, 0), Coordinate(0, 1), Coordinate(-1, 0), Coordinate(0, -1)]
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DIR_TRANS = {"R": 0, "D": 1, "L": 2, "U": 3}
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class Day(AOCDay):
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inputs = [
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[
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(62, "input18_test"),
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(237, "input18_test2"),
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(227, "input18_test3"),
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(54, "input18_test4"),
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(50603, "input18"),
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],
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[
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(952408144115, "input18_test"),
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(96556251590677, "input18"),
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],
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]
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def parse_input(self, part2: bool = False) -> Iterable[tuple[int, int]]:
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for line in self.getInput():
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d, s, c = line.split()
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if not part2:
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yield DIR_TRANS[d], int(s)
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else:
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yield int(c[-2]), int(c[2:-2], 16)
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def get_lagoon_area(self, part2: bool = False) -> int:
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start = Coordinate(0, 0)
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points = []
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perimeter = 0
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for d, l in self.parse_input(part2):
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perimeter += l
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end = start + DIRECTIONS[d] * l
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points.append(end)
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start = end
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p = Polygon(points)
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a = abs(p.get_area())
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return int(p.get_area()) + perimeter // 2 + 1
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def part1(self) -> Any:
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return self.get_lagoon_area()
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def part2(self) -> Any:
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return self.get_lagoon_area(part2=True)
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if __name__ == "__main__":
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day = Day(2023, 18)
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day.run(verbose=True)
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