using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Base CastThis = new Base();

        Derived Inherited = (Derived)CastThis;

    }

    public class Base {

        public int Dewd;

        public Base(){}

    }

    public class Derived : Base {

        public Derived() : base() {}

    }

}