#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
	cin>>n;
	
	int zgw=1;
	
	for(int i=1 ; i<=n-1 ; i++){
		zgw*=10;
	}
		
	int r=0;
	for(int i=1;i<=n;i++){
		r+=n*zgw;
		zgw/=10;
	} 
	
	
	cout<<r<<endl;
	
	
	
	
	return 0;
}

/**************************************************************
	Problem: 2081
	User: LYY001
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/