#include <stdio.h>
#include <stdlib.h>

int main(int argc, char const *argv[])
{
    int a , Num;
	scanf("%d %d",&a,&Num);
	printf("%d", Sn(a,Num,a));
	return 0;
}

int Sn(int x,int N,int value){
	if (N == 1)
	{
		return x;
	}else{
		return x+Sn(x*10+value,N-1,value);
	}
}