제출 #737956

#제출 시각아이디문제언어결과실행 시간메모리
737956guagua0407Newspapers (CEOI21_newspapers)C++17
0 / 100
0 ms212 KiB
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define all(x) x.begin(),x.end()
 
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n,m;
    cin>>n>>m;
    cout<<"YES"<<'\n';
    cout<<2*n-2<<'\n';
    for(int i=n-1;i>=1;i--){
        cout<<i<<' ';
    }
    for(int i=1;i<=n-1;i++){
        cout<<i<<' ';
    }
    return 0;
}
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