简单模仿银行排队系统，欢迎初学者一起学习-Simple imitation bank queuing system, welcome beginners to learn

高速公路双服务台排队程序，可以试想自定义服务时间和到达时间，来寻求系统最优，也可以直接寻求系统最优。(The double service queuing procedure of freeway can think of customized service time and arrival time to find system optimum or direct system optimization.)