Frequency Issue

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Alice and Bob are very interested in arrays. Alice gave Bob an array of **N** integers and an integer **X** and asked him to perform some operations on them. For each A[i] *($1 \leq i \leq N$)*, the operations Bob can do are as follows: - Add X to A[i]. - Subtract X from A[i]. - Keep the element unchanged. The operation can be applied **only once** on each A[i]. After performing one of the abo

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solution.cppC++17

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