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CF700B-Connecting Universities

CF700B-Connecting Universities 题目: 题目描述: Treeland is a country in which there are $ n $ towns connected by $ n-1 $ two-way road such that it’s possible to get from any town to any other town. In Treeland there are $ 2k $ universities which are located in different towns. Recently, the president signed the decree to connect universities by high-speed network.The Ministry of