2016年5月3日
技巧题---Single boy
摘要： Description Today is Christmas day. There are n single boys standing in a line. They are numbered form 1 to n from left to right. The i-th single boy 阅读全文
posted @ 2016-05-03 17:49 茶飘香~ 阅读(174) 评论(0) 推荐(0) 编辑