transport

#include<iostream>
using namespace std;
int transport(int a)
{
    int d=0;
    if(a<=999)
        return 0;
    else 
        a=a/10000;
    d=4;
        while(d>0)
        {
            a=a*10+1;
            d--;
        }
        return a;
}
int  main()
{
    int a,b;
    cin>>a;
    b=transport(a);
    if(b==0)
        cout<<"error!"<<endl;
    else
        cout<<b<<endl;
    return 0;
}