#include<stdio.h>
#include<stdlib.h>
#include<assert.h>
 
int Sum(int a, int n)
{
	assert(n > 0);
	int sum = 0;
	int temp = a; 
	for (int i = 0; i < n; i++)
	{
		sum = sum + a;
		a = (a * 10) + temp; 
	}
	return sum;
}
int main()
{
	int a = 0;
	int n = 0;
	scanf("%d", &a);
	scanf("%d", &n);
	printf("%d\n", Sum(a, n));
	system("pause");
	return 0;
}