有一狭长停车场可停放n辆车，只有一个门可供进出。车辆按照到达的早晚从最里面依次向外排列，若停车场中的车辆出来，则在它之后进入停车场的车都要让路，然后这些车辆再依次进场。-There is a narrow parking lot can park n cars and only one door for access. Vehicles arrive sooner or later, according to sequence outward from the inside are arranged in the vehicle if the parking lot out into the parking lot in the car after it must give way, and then turn these vehicles approach.