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Leetcode 3068. Find the Maximum Sum of Node Values

Given a tree where performing an operation on an edge XORs both endpoint node values by k, determine the maximum total node sum achievable by any sequence of operations — equivalently, choose a subset of nodes (subject to the tree's parity constraint from edge operations) to XOR by k so the resulting sum is maximized.

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Leetcode 3068. Find the Maximum Sum of Node Values | Hello Interview