View Code of Problem 86

#include<stdio.h>
#include<string.h>
#include<math.h>
#include<malloc.h>
int main(){
	int n, m;
	scanf("%d%d", &n, &m);
	long int sum=0;
	long int s=n;
	for (int i = 0;i < m;i++) {
		sum = sum + s;
		s = s * 10 + n;
	}
	printf("%ld\n", sum);
		

}