abstract class Command
    {
        public virtual void Execute();
    }
    abstract class MarsRoverCommand : Command
    {
        protected MarsRover Rover { get; private set; }

        public MarsRoverCommand(MarsRover rover)
        {
            this.Rover = rover;
        }
    }
    class BreakCommand : MarsRoverCommand
    {
        public BreakCommand(MarsRover rover)
            : base(rover)
        {
        }
        public override void Execute()
        {
            Rover.Rotate(-5.0);
        }
    }
 class TurnLeftCommand : MarsRoverCommand
    {
        public TurnLeftCommand(MarsRover rover)
            : base(rover)
        {
        }
        public override void Execute()
        {
            Rover.Rotate(-5.0);
        }
    }