ProgBasics01FirstStepsInCoding04RectangleArea

import java.util.Scanner;

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

        double a = Double.parseDouble(scanner.nextLine());
        double b = Double.parseDouble(scanner.nextLine());
        System.out.println(a * b);
    }
}