cAn YoU sOlVe It

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Shanaya loves to take part in competitive coding contests. Today, when she was attending one, she was able to solve all problems except one. The unsolved problem was- A number $x$ was given and she needed to find out the total number of possible pairs $(p, q)$ such that they follow the following questions: - $Sum(p) \lt Sum(q)$, where $Sum(r)$ denotes the sum of the digits of integer $r$. - $0 \

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solution.cppC++17

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