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Solution: Longest Path With Different Adjacent Characters

Explore the method to find the longest path in a rooted tree where no two adjacent nodes share the same character. Understand how to use parent arrays, in-degree calculations, and topological ordering to track chains and compute the maximum path length efficiently. This lesson helps you approach tree problems involving character constraints step-by-step with clear algorithmic techniques.

Statement

You are given a rooted tree with nn nodes, numbered from 00 to n1n - 1, where the tree is connected, undirected, and has no cycles. The tree is represented by a 0-indexed array parent of size nn, where parent[i] is the parent of node ...