using System;

public class Program

{

    public static void Main()

    {

        RunYou();

        RunYou();

        RunMe();

        RunMe();

    }

    private void RunYou()

    {

        Console.WriteLine("Hello World" + Environment.NewLine +

                          "" + Environment.NewLine +

                          "" + Environment.NewLine +

                          "Goodbye World" + Environment.NewLine);   

    }

    private void RunMe()

    {

        Console.WriteLine($"Hello World{Environment.NewLine}" +

                          $"{Environment.NewLine}" + 

                          $"{Environment.NewLine}" + 

                          $"Goodbye World{Environment.NewLine}");

    }

}