2017 年 7月 21 日随笔档案 - dwtfukgv

2017年7月21日

摘要： Suppose a bank has K windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. All the c 阅读全文

posted @ 2017-07-21 13:56 dwtfukgv 阅读(182) 评论(0) 推荐(0)