[SW Expert Academy] 구구단2 (D3)

https://swexpertacademy.com/main/solvingProblem/solvingProblem.do

SW Expert Academy

 

import java.util.Scanner;

public class Solution {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int t = sc.nextInt();

		for (int tc = 1; tc <= t; tc++) {

			int a = sc.nextInt();
			int b = sc.nextInt();

			if (a >= 10 || a < 1 || b >= 10 || b < 1) {
				System.out.println("#" + tc + " " + -1);
				continue;
			}

			else {
				System.out.println("#" + tc + " " + a * b);
			}

		}

	}
}