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Solution: Longest Path With Different Adjacent Characters

Understand how to apply topological sort to analyze a rooted tree and find the longest path where no two consecutive nodes share the same character. This lesson guides you through calculating in-degrees, processing nodes in topological order, and combining chains from child nodes to solve this problem efficiently.

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 ...