使用的排队现象，通过仿真手法评估其营业状况。*基本要求：设某理发馆有N把理发椅，可同时为N位顾客进行理发。-Queues used to assess the status of its business through simulation techniques.* Basic Requirements: Set up a barber shop to barber chair of N, N-bit customers can simultaneously be a haircut.