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1123: [POI2008]BLO Description Byteotia城市有n个 towns m条双向roads. 每条 road 连接 两个不同的 towns ,没有重复的road. 所有towns连通。 Byteotia城市有n个 towns m条双向roads. 每条 road 连接 阅读全文
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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) t 阅读全文
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P3119 [USACO15JAN]草鉴定Grass Cownoisseur 链接：https://www.luogu.org/problemnew/show/P3119 题目描述 In an effort to better manage the grazing patterns of his c 阅读全文