Guard Quarters

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Kang Sae-byeok was so frustrated with daily surprise games that she laid out a plan to know the idea of the next game beforehand. For executing her plan, she'll sneak in to the guards' quarters at midnight. The guards' quarters can be represented as a tree with $N$ nodes and $N-1$ edges where a node represents a guard's room and an edge represents a hallway connecting two rooms. You can move from

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solution.cppC++17

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