Shanon and Modular Test

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Shanon is excellent with numbers and very strong in math, at least she thinks so. So, her professor wants to test her confidence by giving her a tough question in front of the class. He gave Shanon a number $M$ in the board and an array $A$ of $N$ distinct integers. She can perform the following operations $N$ number of times: - Pop any one integer from $A$. - Replace $M$ in the board with $M$%$A

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solution.cppC++17

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