New Gadgets for Doraemon

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Problem Description Nobita constantly keeps getting into trouble and asks Doraemon to lend him new gadgets everytime. However, Doraemon is currently short of gadgets and has reached the 22nd century to buy new gadgets. The gadget market in the 22nd century is connected has shops where there is exactly one path between any two of them. (A tree, not a forest!) Each gadget is recognised by an

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solution.cppC++17

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