Strong Connections

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Due to COVID-19 pandemic, there is a scarcity of food in villages as the supply of food grains has stopped due to nationwide lockdown. So $Chef$ decides to provide food to each and every house of his village. Each house is connected with other houses with $unidirectional$ road. So if houses A and B are connected then one can go from A to B but cannot return back from B to A. Chef gives food at

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solution.cppC++17

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