generated from public/aoc_template
63 lines
1.7 KiB
Python
63 lines
1.7 KiB
Python
from tools.aoc import AOCDay
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from typing import Any
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def is_update_valid(rules: list[list[int]], update: list[int]) -> bool:
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for rule in rules:
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if rule[0] in update and rule[1] in update and update.index(rule[0]) > update.index(rule[1]):
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return False
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return True
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class Day(AOCDay):
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inputs = [
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[
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(143, "input5_test"),
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(5732, "input5"),
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],
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[
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(123, "input5_test"),
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(4716, "input5"),
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],
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]
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def parse_input(self) -> tuple[list[list[int]], list[list[int]]]:
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rules, pages = self.getMultiLineInputAsArray()
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rule_list = [list(map(int, s.split("|"))) for s in rules]
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update_list = [list(map(int, s.split(","))) for s in pages]
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return rule_list, update_list
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def part1(self) -> Any:
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rules, updates = self.parse_input()
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ans = 0
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for update in updates:
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if is_update_valid(rules, update):
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ans += update[len(update) // 2]
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return ans
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def part2(self) -> Any:
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rules, updates = self.parse_input()
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ans = 0
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for update in updates:
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if is_update_valid(rules, update):
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continue
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while not is_update_valid(rules, update):
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for rule in rules:
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if rule[0] in update and rule[1] in update and update.index(rule[0]) > update.index(rule[1]):
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a, b = update.index(rule[0]), update.index(rule[1])
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update[a], update[b] = update[b], update[a]
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ans += update[len(update) // 2]
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return ans
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if __name__ == "__main__":
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day = Day(2024, 5)
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day.run(verbose=True)
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