Lovers Gift

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Chef buys lots of gifts for his love Chefua. Chef keeps all his money in the bank, and so if he wants to buy a gift, he must go to one of the branches of the bank in the country to get money, and then buy the gift. The country where Chef lives consists of N cities which are connected by N - 1 bidirectional roads in such way that there is a unique path from any city to any other city. The cities n

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