2019-2020 ICPC Asia Hong Kong Regional Contest
C. Constructing Ranches 题意： 一棵树上每个节点有权值\(a_i\)，问你有多少路径满足以下条件：路径经过的每个点权作为边长，可以构成一个多边形。 解法： 三条边能构成 ...
原文：2019-2020 ICPC Asia Hong Kong Regional Contest 部分题解
ICPC Asia Hong Kong Regional Contest 目录 ICPC Asia Hong Kong Regional Contest A. Axis of Symmetry B. Binary Tree C. Constructing Ranches D. Defining Labels E. Erasing Numbers G. Game Design I. Incomin ...
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