#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: linzihang
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/