https://www.acmicpc.net/problem/2588
import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int num1 = sc.nextInt();
int num2 = sc.nextInt();
System.out.println(num1 * (num2 % 10));
System.out.println(num1 * ((num2 % 100) / 10));
System.out.println(num1 * (num2 / 100));
System.out.println(num1 * num2);
}
}