using System;

​

public delegate int MyDelegate();

public class Program

{

    public static void Main()

    {

        MyDelegate del1 = ClassA.MethodA;

        MyDelegate del2 = ClassB.MethodB;

        MyDelegate del = del1 + del2;

        Console.WriteLine(del());

    }

}

​

public class ClassA

{

    public static int MethodA()

    {

        return 100;

    }

}

​

public class ClassB

{

    public static int MethodB()

    {

        return 200;

    }

}