from typing import List

EXAMPLE = """
3   4
4   3
2   5
1   3
3   9
3   3
"""


class SplitLists:
    def __init__(self, input: str):
        self.list1, self.list2 = zip(*[val.split() for val in input.split("\n") if val])

    def __str__(self) -> str:
        return f"Part 1 = {self._part1}, Part 2 = {self._part2}"

    @property
    def _part1(self) -> int:
        outp = 0
        for val in self.distances():
            outp += val
        return outp

    @property
    def _part2(self) -> int:
        outp = 0
        for val, occ in zip(self.list1, self.occurances()):
            outp += int(val) * occ
        return outp

    def distances(self) -> List[int]:
        return [
            abs(int(val1) - int(val2))
            for val1, val2 in zip(sorted(self.list1), sorted(self.list2))
        ]

    def occurances(self) -> List[int]:
        return [self.list2.count(key) for key in self.list1]


if __name__ == "__main__":
    example = SplitLists(input=EXAMPLE)
    print("EXAMPLE:\n", example)
    assert example._part1 == 11
    assert example._part2 == 31
    with open("input.txt", "r") as f:
        print("Puzzle:\n", SplitLists(input=f.read()))