Introduction - If you have any usage issues, please Google them yourself
1) simulate the establishment of a service time interval, such as 7:00-20:00, or limit the maximum number of services;
(2) the customers arrive at the random time, select the ticket / check / refund business random, choose the manual / automatic ticket random, and select the least number of queues in the same way of purchase, and random numbers are needed to simulate the random situation.
(3) we need to distinguish between different windows or different self service ticketing machines.
(4) receive service / self service tickets with a random number simulation time.