Feynman and Manufacturing Plant

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There us a story told by Richard Feynman in the book "Surely You're Joking Mr. Feynman" where he describes inspecting a manufacturing plant. The plant has N chambers and M valves, each valve connects two chambers. The valves are bidirectional , i.e., substance can flow in either direction through the valve. Substance is manufactured in chamber 1 and flows to chamber N, where is exits the plant.

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solution.cppC++17

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