제출 #961117

#제출 시각아이디문제언어결과실행 시간메모리
961117PagodePaivaNewspapers (CEOI21_newspapers)C++17
0 / 100
0 ms348 KiB
#include<bits/stdc++.h>
#define N 1010

using namespace std;

vector <int> g[N];

int main(){
    int n, m;
    cin>>n >>m;
    for(int i = 0;i <m;i++){
        int a, b;
        cin >> a >> b;
    }
    cout << "YES\n";
    cout << 2*n-2 << endl;
    cout << n << ' ';
    for(int i = n;i > 1;i--) cout << i << ' ';
    for(int i = n;i > 1;i--) cout << i << ' ';
        cout << endl;

    return 0;
}
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