摘要: Problem DescriptionMachines have once again attacked the kingdom of Xions. The kingdom of Xions has N cities and N-1 bidirectional roads. The road network is such that there is aunique path between any pair of cities.Morpheus has the news that K Machines are planning to destroy the whole kingdom. Th 阅读全文
posted @ 2013-11-02 10:58 persistent codeants 阅读(326) 评论(0) 推荐(0)