View Code of Problem 86

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b = 0,n,sum = 0,op = 1;
	cin>>a>>n;
	int tmp = a;
	while(n--){
		tmp = a * op + b;
		b = tmp;
		sum = sum + tmp;
		op*=10;
		
		
	}
	
	
	
	cout<<sum;
	
	
	return 0;
}