Query of Color

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In order to decide who gets to keep the Going Merry,the full-sized ship owned by the Straw Hat Pirates, Usopp has decided to challenge Luffy with a problem: Luffy is given a rooted tree with **n** vertices. Vertex number **1** is the root of this tree. Each vertex can be either **black** or **white**. At first, all vertices are **white**. He is asked to process **q** queries. Each **node has som

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solution.cppC++17

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