The Two Dear Friends of Chefland

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Chef has two dear friends named Shivansh and Vivek living in Chefland. As you might know, Chefland is a country of $N$ cities, where there are $N - 1$ roads connecting two cities, such that it is possible to go to any city from any other city using nothing but these roads. Ever since the Industrial Revolution, every city of chefland became a centre for automobile industries, where the $i$-th city

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solution.cppC++17

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