using System;
using System.Collections.Generic;

namespace TestCS
{
    class Program
    {
        static void Main(string[] args)
        {
            Vehicle vehicle = new Maserati(new MaseratiEngine());
            vehicle.Run();

            vehicle = new Maserati(new BMWEngine());
            vehicle.Run();

            vehicle = new BMW(new BMWEngine());
            vehicle.Run();

            Console.ReadKey();
        }

        abstract class Vehicle
        {
            protected Engine m_Engine;
            public Vehicle(Engine engine)
            {
                m_Engine = engine;
            }

            public abstract void Run();
        }

        abstract class Engine
        {
            public abstract void Launch();
        }

        class Maserati : Vehicle
        {
            public Maserati(Engine engine) : base(engine)
            {

            }

            public override void Run()
            {
                Console.WriteLine("Maserati Run");
                m_Engine.Launch();
            }
        }

        class BMW : Vehicle
        {
            public BMW(Engine engine) : base(engine)
            {

            }

            public override void Run()
            {
                Console.WriteLine("BMW Run");
                m_Engine.Launch();
            }
        }

        class MaseratiEngine : Engine
        {
            public override void Launch()
            {
                Console.WriteLine("Maserati Engine Launch");
            }
        }

        class BMWEngine : Engine
        {
            public override void Launch()
            {
                Console.WriteLine("BMW Engine Launch");
            }
        }
    }
}