using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    public enum DanceType

    {

        SugarPlum = 0,

        Esmeralda = 1,

        BlackSwan = 2,

        Tango = 3,

        Waltz = 4,

        Swing = 5

    }

    public enum CostumeType

    {

        Leotard = 0,

        Wings = 1,

        RomaDredd = 2,

        RedDress = 3,

        WhiteDress = 4,

        Suspenders = 5

    }

    public interface IDancePerformance

    {

         void PerformDance(DanceType _danceType, CostumeType costumeType);

    }

    public abstract class Dancer

    {

        IDancePerformance _dancePerformance;

        public Dancer(IDancePerformance dancePerformance)

        {

            _dancePerformance = dancePerformance;

        }

        public virtual void Dance()

        {

            Console.WriteLine("Dancing... ");

        }

    }

        public class ClassicalDancer : Dancer

        {

            public override void Dance()

            {

                Console.WriteLine("override");

            }

        }

}