感觉像 [ONTAK 2010 Earthquake](https://szkopul.edu.pl/problemset/problem/rMdNlcTqcC82e-uqF62nFRuA/site/?key=statement) ~~也许可以用类欧瞎搞~~
by 一只书虫仔 @ 2020-10-24 14:22:29
https://www.luogu.com.cn/discuss/show/186834
by qwaszx @ 2020-10-24 14:24:32
不动态，不强制在线可做
by 某科学的蒟蒻 @ 2020-10-24 14:25:18
[UNR](https://uoj.ac/contest/56/problem/553)
by 某科学的蒟蒻 @ 2020-10-24 14:26:04
[题解](https://peehs-moorhsum.blog.uoj.ac/blog/6375)
by 某科学的蒟蒻 @ 2020-10-24 14:26:39
@[一只书虫仔](/user/114914) @[qwaszx](/user/22136) @[某科学的蒟蒻](/user/128252)
谢谢
by hanzhongtlx @ 2020-10-24 14:30:06