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posted @ 2023-02-07 21:19
灰鲭鲨
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题目描述 There are $ n $ points on the plane, the $ i $ -th of which is at $ (x_i, y_i) $ . Tokitsukaze wants to draw a strange rectangular area and pick 阅读全文
posted @ 2023-02-07 20:42
灰鲭鲨
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You are given an unrooted weighted tree \(T\) with vertices \(1,2,…,n\). Please answer some queries. We define \(dist(i,j)\) as the distance between v 阅读全文
posted @ 2023-02-07 20:29
灰鲭鲨
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