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Solution: Longest Path With Different Adjacent Characters

Explore how to determine the longest path in a rooted tree where no two adjacent nodes share the same character. This lesson guides you through using topological sorting, in-degree calculation, and managing longest chains from child nodes to efficiently solve the problem. By the end, you will understand how to combine child chains and update paths to find the maximum valid path length.

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 ...