Pizza Toppings

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The city of Quensland has $N$ city and they are connected by $N-1$ roads having no cycles. There always exists a unique path between any two cities.Each road is bidirectional having length of 1 and connects two different cities. A new pizza service has arrived in Quensland where requests are served as queries , please note that the toppings of the pizza differentiate the pizzas with their colors.

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solution.cppC++17

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