View Code of Problem 86

#include<stdio.h>
int main(){
	int a,n;
	int sum=0;
	int t;
	scanf("%d %d",&a,&n);
	t=0;
	for(int i=0;i<n;i++){
		t=t*10+a;
        sum+=t;
	}
	printf("%d",sum);
}