有可以停放n辆汽车，车辆按到达停车场时间的先后次序依次从停车场最里面向大门口处停放。如果停车场已放满n辆车，以后到达的车辆在大门外等待，停车场内有车开走，则排在第一辆车进入停车场。出去车计算停车价格(Yes, you can park n cars. The vehicles will be parked from the inside of the parking lot to the main entrance in order of arrival time. If the parking lot is full of N vehicles, the later arrival vehicle waits outside the gate, the parking lot has the vehicle to drive away, but in the first vehicle enters the parking lot. Go out and calculate the parking price)