class Solution:
    def findWinners(self, matches: List[List[int]]) -> List[List[int]]:
        tally: dict = {}

        for match in matches:
            for team in match:
                tally[team] = 0

        for match in matches:
            tally[match[1]] += 1

        undefeated: list = [x for x in tally if tally[x] == 0]
        one_loss: list = [x for x in tally if tally[x] == 1]

        undefeated.sort()
        one_loss.sort()

        return [undefeated, one_loss]