利用队列模拟车进入车位之前的排队情况，同时输出车刚进入便道的停车位置。n个车位用栈来模拟，同时输出车刚进入停车场内的车位。与此同时记录车到达和离开的时间，从而计算应缴费用。-Queuing simulation using vehicles to enter the parking situation before the line, while the output of car parking spaces just entering the pavement. n spaces to simulate the stack, while the output into the parking lot just inside the car parking spaces. At the same time record the arrival and departure time of vehicles to calculate fees payable.