c#include <bits/stdc++.h> using namespace std; bool isVisit[2001]; int N, M; vector<int> relative[2002]; bool dfs(int cur, int idx){ isVisit[cur]
#include <bits/stdc++.h> using namespace std; bool isVisit[2001]; int N, M; vector<int> relative[2002]; bool dfs(int cur, int idx){ isVisit[cur]