Cover the Tree——2020牛客暑期多校訓練營（第二場）C題

Cover the Tree 題目 輸入描述 輸出描述 樣例輸入 樣例輸出 說明 題目大意 解題思路 AC但不是正解的代碼 AC正解 題目地址 題目 Given an unrooted tree, you should choose the minimum number of chains that all edges in the tree are covered by at least one

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