import java.util.Scanner;

public class RectangleArea {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        if (!sc.hasNextInt()) {
            System.out.println("Invalid input");
            return;
        }
        int width = sc.nextInt();

        if (!sc.hasNextInt()) {
            System.out.println("Invalid input");
            return;
        }
        int height = sc.nextInt();

        if (width > 0 && height > 0) {
            System.out.println(width * height);
        } else {
            System.out.println("Invalid input");
        }
    }
}