#include<stdio.h>

int zbir(int n, int k);

int main(){
	fprintf(stdout,"%d\n",zbir(123456,1));
	return 0;
}

int zbir(int n, int k){
	if(n==0)
		return 0;
	else
		return zbir(n/10,k+1)+ (n%10)*k;
}