View Code of Problem 86

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n1 = scanner.nextInt();
        int num = n1;
        int n2 = scanner.nextInt();
        long result = 0;
        //2 + 2*1
        //2
        //2*10 20+2 = 22
        //2*100=200 200+22;
        if (n2 >= 1) {
            result = n1;
        }
        for (int i = 1; i < n2; i++) {
            n1 = (int) (n1 + num * Math.pow(10, i));
            result += n1;
        }
        System.out.println(result);
    }
}