2025-08-02 07:28:21 +0000 UTC

class Solution:
    def lastStoneWeight(self, stones: List[int]) -> int:
        stones.sort()
        while stones:
            last = stones.pop()
            if not stones:
                return last
            prev = stones[-1]
            if last == prev:
                stones.pop()
            else:
                stones[-1] = last - prev
                stones.sort()
        return 0