#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,i,x=0;
    cin>>n;
    for(i=1;i<=n;i++){
        x=n+x*10;
    }
    cout<<x;
}
/**************************************************************
	Problem: 2081
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/