3646. Next Special Palindrome Number

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You are given an integer n. A number is called special if: - It is a palindrome. - Every digit k in the number appears exactly k times. Return the smallest special number strictly greater than n. Example 1: Input: n = 2 Output: 22 Explanation: 22 is the smallest special number greater than 2, as it is a palindrome and the digit 2 appears exactly 2 times. Example 2: Input: n = 33 Outp

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solution.cppC++17

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