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3515. Shortest Path in a Weighted Tree

LeetCodeArrayTreeDepth-First SearchBinary Indexed TreeSegment TreeOpen on judge ↗

You are given an integer n and an undirected, weighted tree rooted at node 1 with n nodes numbered from 1 to n. This is represented by a 2D array edges of length n - 1, where edges[i] = [ui, vi, wi] indicates an undirected edge from node ui to vi with weight wi. You are also given a 2D integer array queries of length q, where each queries[i] is either: - [1, u, v, w'] – Update the weight o

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solution.cppC++17

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