using System;

public abstract class cricket

{

    public abstract  void dhoni();

    public void kohli()

    {

        Console.WriteLine("iam kohli");

    }

}

public class csk:cricket

{

    public override void dhoni()//this line is important

    {

        Console.WriteLine("iam dhoni");

    }

}

public class Program

{

    public static void Main()

    {

        csk obj=new csk();

        obj.dhoni();

        obj.kohli();

    }

}