View Code of Problem 86

#include<iostream>
#include<vector>
#include<algorithm>
#include<string>
#include<climits>

using namespace std;


int main()
{
	int a, n;
	cin >> a >> n;

	long sum = 0;
	int temp = a;

	for (int i = 0; i < n; i++) {

		sum += a;

		a = a * 10 + temp;
	}

	cout << sum << endl;
}