using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _12.Rectangle_Properties
{
    class Program
    {
        static void Main(string[] args)
        {
            // default float point value ми е настроeн на double

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

            var area = width * height;
            var perimeter = 2*(width + height) ;
            var diagonal = Math.Sqrt((width * width) + (height * height));

            Console.WriteLine(perimeter);
            Console.WriteLine(area);
            Console.WriteLine(diagonal);






        }
    }
}