1、spfa求最长路加判环 100% #include<bits/stdc++.h> #define x first #define y second #define mem(a,b) memset(a,b,sizeof(a)) #define F(i,l,r) for(int i=l;i<=r;i++) using namespace std; typedef long long ll; typedef pair<int,int> pii; typedef unsigned long long ull; const int N=1005; struct e...