Mumbai N00B

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The rail system in Mumbai has changed. Now, you can buy a ticket from a station, and go to another station, if there are exactly K tracks on the route, and the route passes through a particular station. You are given N, the number of stations in Mumbai. The number M denotes how many tracks there are in the system. You are also given M pairs of integers, Ai and Bi, denoting that there is a track fr

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solution.cppC++17

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