using System;

public class Program

{

    public static void Main()

    {

        Apple apple = new Orange();

        Console.WriteLine(apple.GetColor());

    }

}

public class Apple

{

    public virtual string GetColor()

    {

        return "Red";

    }

}

public class Orange : Apple

{

    public override string GetColor()

    {

        return "Orange";

    }

}