bzoj 1718: [Usaco2006 Jan] Redundant Paths 分离的路径
Description
In order to get from one of the F (1 <= F <= 5,000) grazing fields (which are numbered 1..F) to another field, Bessie and the rest of the herd are forced to cross near the Tree of Rot
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2014-10-20 20:01:15 ·
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