2017年11月1日
Information Disturbing hdu-3586
摘要： Problem Description In the battlefield , an effective way to defeat enemies is to break their communication system.The information department told you 阅读全文
posted @ 2017-11-01 23:40 天之道，利而不害 阅读(296) 评论(0) 推荐(0)
Choosing Capital for Treeland codeforce 219-D
摘要： The country Treeland consists of n cities, some pairs of them are connected with unidirectional roads. Overall there are n - 1 roads in the country. W 阅读全文
posted @ 2017-11-01 13:10 天之道，利而不害 阅读(408) 评论(0) 推荐(0)