Submission #783339

#	Time	Username	Problem	Language	Result	Execution time	Memory
783339		vh50	Newspapers (CEOI21_newspapers)	C++17	0 / 100	0 ms	340 KiB

newspapers

#include <bits/stdc++.h>
#define int long long
#define endl "\n"
using namespace std;
const int MAXN = 2e3;
int n, m, marc[MAXN][MAXN];
vector <int> g[MAXN];
void dfs(int a, int r)
{
	marc[a][r] = 1;
	for(auto v : g[a])
	{
		if(marc[v][r])	continue;
		dfs(v, r);
	}
}
main()
{
	cin >> n >> m;
	for(int i = 0; i < m; i++)	
	{
		int a, b;
		cin >> a >> b;
		a--, b--;
		g[a].push_back(b);
		g[b].push_back(a);
	}
	if(m == n - 1)	cout << "YES" << endl;
	else cout << "NO" << endl;
}

Compilation message (stderr)

newspapers.cpp:17:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   17 | main()
      | ^~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 8
• Subtask 3: 0 / 80