Get to the point

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Lets get to the point directly. Preeti loves a string if the string has b's, which are immediately followed by a. And we know that Kabir loves Preeti and hence Kabir loves those strings too :). Hence he is interested in calculating the number of b's in a string which are immediately followed by a. But since he is a medical student and does not know how to do this, he asks for your help. ###Input

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solution.cppC++17

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