啊，一个二分做这么离谱
by xiaoyu2010 @ 2024-01-29 09:44:38
这里ans的极限范围是1e10，必须开long long @[yashi258](/user/935299)
by xiyihan @ 2024-01-30 15:32:30
@[xiyihan](/user/152651) 谢谢！！AC啦
by yashi258 @ 2024-02-02 09:41:40