2014年5月11日
hust 1019 A dangerous trip
摘要： 题目描述N cities are connected by a network of M one-way roads. It is known that these roads do not cross outside the cities. The numeration of the cities... 阅读全文
posted @ 2014-05-11 10:17 Hust_BaoJia 阅读(211) 评论(0) 推荐(0) 编辑
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