2014年8月13日
uva 1401
摘要： Neal is very curious about combinatorial problems, and now here comes a problem about words. Knowingthat Ray has a photographic memory and this may no... 阅读全文
posted @ 2014-08-13 15:08 hyx1 阅读(242) 评论(0) 推荐(0) 编辑