2019-2020 ICPC Asia Hong Kong Regional Contest
C. Constructing Ranches 題意： 一棵樹上每個節點有權值\(a_i\)，問你有多少路徑滿足以下條件：路徑經過的每個點權作為邊長，可以構成一個多邊形。 解法： 三條邊能構成 ...
原文：2019-2020 ICPC Asia Hong Kong Regional Contest
題解： https: files.cnblogs.com files clrs HKEditorial V .zip Code： Part A. Axis of Symmetry include lt cstdio gt include lt algorithm gt include lt vector gt using namespace std typedef long long ll con ...
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