using System;

public class Program

{

    public static void Main()

    {

        start:

        double length = double.Parse(Console.ReadLine());

        double width = double.Parse(Console.ReadLine());

        Console.WriteLine(area(length, width));

        goto start;

    }

    static private double area(double a, double b)

    {

        return a *b;

    }

}