青烟绕指柔的博客

题目链接：HDU - 6252可以发现，给出的信息其实就是几个点之间的大小关系，建差分约束系统即可。AC代码：#pragma GCC optimize("-Ofast","-funroll-all-loops")#include<bits/stdc++.h>#define int long longusing namespace std;const int N=2e4+10,M=N*10;int n,m,x,d[N],cnt[N],ts,vis[N];int head[N]

题目描述Farmer John has decided to assemble a panoramic photo of a lineup of his N cows (1 <= N <= 200,000), which, as always, are conveniently numbered from 1…N. Accordingly, he snapped M (1 <=...