120 lines
3.3 KiB
Python
120 lines
3.3 KiB
Python
from tools.aoc import AOCDay
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from typing import Any
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def has_humn(monkeys: dict, root: str) -> bool:
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if root == 'humn':
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return True
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if monkeys[root]['op'] is None:
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return False
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opr, _, opl = monkeys[root]['op']
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if opr == 'humn' or opl == 'humn':
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return True
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return has_humn(monkeys, opl) or has_humn(monkeys, opr)
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def find_humn(monkeys: dict, root: str, target: int) -> int:
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if root == 'humn':
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return target
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opl, op, opr = monkeys[root]['op']
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if has_humn(monkeys, opl):
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value = get_monkey(monkeys, opr)
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match op:
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case '+':
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return find_humn(monkeys, opl, target - value)
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case '-':
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return find_humn(monkeys, opl, target + value)
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case '*':
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return find_humn(monkeys, opl, target // value)
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case '/':
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return find_humn(monkeys, opl, target * value)
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else:
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value = get_monkey(monkeys, opl)
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match op:
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case '+':
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return find_humn(monkeys, opr, target - value)
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case '-':
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return find_humn(monkeys, opr, value - target)
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case '*':
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return find_humn(monkeys, opr, target // value)
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case '/':
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return find_humn(monkeys, opr, target // value)
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def get_monkey(monkeys: dict, monkey: str, finalize: bool = False) -> int | None:
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if monkeys[monkey]['op'] is None:
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return monkeys[monkey]['value']
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opl, op, opr = monkeys[monkey]['op']
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opl, opr = get_monkey(monkeys, opl, finalize), get_monkey(monkeys, opr, finalize)
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if opl is None or opr is None:
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return None
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match op:
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case "+":
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monkeys[monkey]['value'] = opl + opr
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case "-":
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monkeys[monkey]['value'] = opl - opr
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case "*":
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monkeys[monkey]['value'] = opl * opr
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case "/":
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monkeys[monkey]['value'] = opl // opr
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case _:
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print("Unknown op:", op)
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if finalize:
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monkeys[monkey]['op'] = None
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return monkeys[monkey]['value']
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class Day(AOCDay):
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inputs = [
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[
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(152, "input21_test"),
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(21120928600114, "input21_dennis"),
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(41857219607906, "input21"),
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],
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[
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(301, "input21_test"),
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(3453748220116, "input21_dennis"),
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(3916936880448, "input21"),
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]
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]
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def get_monkey_dict(self) -> dict:
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monkeys = {}
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for line in self.getInput():
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a, b = line.split(": ")
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try:
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monkeys[a] = {
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'op': None,
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'value': int(b)
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}
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except ValueError:
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monkeys[a] = {
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'op': b.split(" "),
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'value': None
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}
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return monkeys
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def part1(self) -> Any:
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return get_monkey(self.get_monkey_dict(), "root")
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def part2(self) -> Any:
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monkeys = self.get_monkey_dict()
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opl, _, opr = monkeys['root']['op']
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if has_humn(monkeys, opl):
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return find_humn(monkeys, opl, get_monkey(monkeys, opr))
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else:
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return find_humn(monkeys, opr, get_monkey(monkeys, opl))
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if __name__ == '__main__':
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day = Day(2022, 21)
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day.run(verbose=True)
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