Submission #984393

#	Time	Username	Problem	Language	Result	Execution time	Memory
984393		alexdd	Newspapers (CEOI21_newspapers)	C++17	4 / 100	1 ms	348 KiB

newspapers

#include<iostream>
using namespace std;
int n,m;
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>m;
    int a,b;
    for(int i=1;i<=m;i++)
    {
        cin>>a>>b;
    }
    if(m!=n-1)
    {
        cout<<"NO\n";
        return 0;
    }
    cout<<"YES\n";
    if(n==1)
    {
        cout<<1<<"\n"<<1;
        return 0;
    }
    if(n<=3)
    {
        cout<<2<<"\n"<<"2 2";
        return 0;
    }
    if(n%2==1)
    {
        cout<<2*(n-1)-1<<"\n";
        cout<<2<<" ";
        for(int i=2;i<n;i++)
            cout<<i<<" ";
        for(int i=2;i<n;i++)
            cout<<i<<" ";
    }
    else
    {
        cout<<2*(n-1)-2<<"\n";
        for(int i=2;i<=n;i++)
            cout<<i<<" ";
        for(int i=2;i<n-1;i++)
            cout<<i<<" ";
    }
    return 0;
}

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