2020年1月9日
1014 Waiting in Line (30分)
摘要： 1014 Waiting in Line (30分) Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting are 阅读全文
posted @ 2020-01-09 17:12 知道了呀~ 阅读(478) 评论(0) 推荐(0)