某商场有一个停车场，当车位未满时，等待的车辆可以进入并计时；当车位已满时，必须有车辆离开，等待的车辆才能进入；当车辆离开时计算停留的的时间，并收费。

汽车的输入信息格式可以是（进入/离开，车牌号，进入/离开时间），要求可以随时显示停车场内的车辆信息以及收费历史记录。

-There is a parking lot of a mall, when the spaces below, the waiting time of vehicles can enter and　when parking is full, you must have vehicles to leave, waiting for vehicles to enter　when the vehicle left the residence when the calculation of the time, and charges . Vehicles can enter the information format (enter/leave and license plate number, entry/departure time), the required display car park at any time a vehicle history information, and fees.