View Code of Problem 86

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,n,sum=0,b,i;
	cin>>a>>n;
	b=a;
	for(i=0;i<n;i++){
		sum+=a;
		a=10*a+b;
	}
	cout<<sum<<endl;
}