using System;

public class Program

{

    public static void Main()

    {

        //012 RectangleProperties

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

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

        double perimeter = 2 * (width + height);

        double area = width * height;

        double diagonal = Math.Sqrt((width*width+height*height));  

        Console.WriteLine("{0}\n{1}\n{2}",perimeter,area,diagonal);

    }

}