using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        V v = new V();

        F f = new F();

        f.Even += v.Method;

        f.Method(75745);

    }

}

​

class V

{

   public void Method(int a)

   {

      Console.WriteLine(a);

   }

}

​

class F

{

    public delegate void Del(int a);

    public event Del Even;

    public void Method(int a)

    {

        Even(a);

    }

}