RectangleArea

import java.util.Scanner;

public class RectangleArea {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double a = Double.parseDouble(scan.nextLine());
        double b = Double.parseDouble(scan.nextLine());

        double area = a*b;
        System.out.print(area);
    }
}