using System;

public class Program

{

    public static void Main()

    {

        AVehicle amaruti = new Maruti();

        amaruti.CC();

        amaruti.StartEngine("Maruti");

        amaruti.StopEngine("Maruti");

        AVehicle aaudi = new Audi();

        aaudi.CC();

        aaudi.StartEngine("Audi");

        aaudi.StopEngine("Audi");

    }

}

abstract public class AVehicle

{

    public void StartEngine(string car)

    {

        Console.WriteLine(car+" Car Engine Start");

    }

    public void StopEngine(string car)

    {

        Console.WriteLine(car+" Car Engine Stop");

    }

    public abstract void CC();

}

public class Maruti : AVehicle

{

    public override void CC()

  {    

    Console.WriteLine("Maruti CC: 800");

  }

}

public class Audi : AVehicle

{

    public override void CC()

  {    

    Console.WriteLine("Audi CC: 8000");

  }

}