每次由键盘接受目前即将加入排队的顾客数目：

由于人们的排队心理，每个人依次将选择人少的通道加入；

每次输入人数后， 各开放的通道同时各有一位顾客付款结束离开；

返回当前开放的总收银通道数和各通道长度；-Accepted by the keyboard s imminent accession to the number of customers queuing at a time:

Due to people queuing psychological, each person in turn will select the channel of the few people to join

After each input the number of open channels at the same time each A customer payments end leave

Returns the current open the total the cashier channel number and the channel length