View Code of Problem 86

#include<iostream>
#include<algorithm>
#include<math.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<cstring>
#include<string>
using namespace std;
int main() {
	
	int a,n,sum=0,num=0;
	cin>>a>>n;
	for(int i=0;i<n;i++)
	{
		num=num*10+a;
		sum+=num;
	}
	cout<<sum; 
	return 0;

}