using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine("I am Sofia Doncheva, a 14 years old person from Sofia.");

        Console.Write("inches = ");

        var inches = int.Parse(Console.ReadLine());

        var cantimeters = inches * 2.54;

        Console.Write("cantimeters  = ");

        Console.Write(cantimeters);

    }

}