某商场有一个100个车位的停车场，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，并且按照每小时1元收费。

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

-A mall with a 100 parking spaces in the parking lot, 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 calculation of stay time and in accordance with the 1 per hour charge. Vehicles can enter the information format (enter/leave and license plate number, entry/departure time), the required display car park at any time the vehicle history information, and fees