到银行办理业务时，你总需要先到排号机前拿一张号码，号码上有你的编号和所处位置，即你的前面还有几个人（没玩过的同学可以抽空到银行看看，多拿几张号牌也没有关系，就当给他们的程序做测试了，^_^），我要做的就是这个流程的模拟。

-To the bank for business, you always get first in front of排号a number, number on the number and your location, that is in front of you there are a few people (not students can be played to the bank for taking the time to look at perspective, the use does not matter how many number plate on their procedures when tested ,^_^), do I need to do is simulate the process.