using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

public class Sibling

{

}

​

public class IPesterService

{

    void Poke();

    void PutHandOnTheirSideOfTheSeat();

    void PutFingerCloseToThemWhileRepeatingImNotTouchingYou();

}