Different Trips

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The Chef is enjoying a wonderful vacation in Byteland. What makes the Chef impressed the most is the road system of the country. Byteland has N cities numbered 1 through N. City 1 is the capital of Byteland. The country also has N-1 bidirectional roads connecting the cities. The i-th road connects two different cities ui and vi. In this road system, people can travel between every pair of differen

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