QUALITY

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Rahul and PrepBuddy have a collection of two types of stones- `Red` and `Black`. `Red` stone has `quality factor=1` and `Black` stone has `quality factor=-1`. PrepBuddy has a normal container containing $N$ bags and each bag contains a mixture of `Red` and `Black` stones. The overall quality factor of the bag is calculated by the summation of the quality factor of Red and Black stones. For exampl

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solution.cppC++17

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