제출 #998353

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
998353		andrei_iorgulescu	Newspapers (CEOI21_newspapers)	C++14	4 / 100	1 ms	408 KiB

newspapers

#include <bits/stdc++.h>

using namespace std;

int n,m;
vector<int> g[1005];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n >> m;
    for (int i = 1; i <= m; i++)
    {
        int x,y;
        cin >> x >> y;
        g[x].push_back(y);
        g[y].push_back(x);
    }
    if (m != n - 1)
    {
        cout << "NO";
        return 0;
    }
    int nrgr = 0;
    for (int i = 1; i <= n; i++)
        if (g[i].size() >= 3)
            nrgr++;
    if (nrgr > 1)
    {
        cout << "NO";
        return 0;
    }
    cout << "YES\n1\n1";
    return 0;
}

• Subtask 1: 0 / 12
• Subtask 2: 4 / 8
• Subtask 3: 0 / 80