摘要: https://www.luogu.com.cn/problem/P3834 #include<bits/stdc++.h> const int fu=1e9+1,INF=2e9+1; using namespace std; const int N=3e7+5,M=2e5+5; int n,cnt 阅读全文
posted @ 2021-01-14 20:17 wwwsfff 阅读(60) 评论(0) 推荐(0)