Spiderman saves the city

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Your friendly neighborhood Spiderman is back with a mission. He has been given a task to collect anti-venom drugs. The anti-venom drugs are present in some of the buildings. Each building that has anti-venom drugs has an enemy building next to it where fake venom drugs are kept. Spiderman's task is to collect only the real one's starting from 1st building itself. There are $M$ buildings in $N$ row

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solution.cppC++17

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