제출 #797185

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
797185		Johann	Newspapers (CEOI21_newspapers)	C++14	8 / 100	1 ms	340 KiB

newspapers

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

int N, M;
vvi adj;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    cin >> N >> M;
    if (M > N - 1)
    {
        cout << "NO\n";
        return 0;
    }

    adj.resize(N);

    for (int i = 0, a, b; i < M; ++i)
    {
        cin >> a >> b;
        --a, --b;
        adj[a].push_back(b), adj[b].push_back(a);
    }

    cout << "YES\n";

    vi ans;
    if (N > 2)
    {
        for (int i = 1; i < N - 1; ++i)
            ans.push_back(i);
        for (int i = N - 2; i > 0; --i)
            ans.push_back(i);
    }
    else
    {
        for (int i = 0; i < N; ++i)
            ans.push_back(0);
    }

    cout << sz(ans) << '\n';
    for (int x : ans)
        cout << x + 1 << " ";
    cout << '\n';

    return 0;
}

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