using System;

public class Program

{

    public static void Main()

    {

        dynamic stud = new Student(1);

        stud.Shout();

        Console.ReadKey();

    }

}

class Student 

{

    int id;

    public Student(int _id)

    {

        this.id = _id;

    }

    public void Shout()

    {

        Console.WriteLine("AAARRRGGGHHH!!!");

    }

}