Amazing Year

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We'll call a year an 'Amazing Year' if all the digits of that year are unique. **Ex.** 2019. Now, given a year as your input, print the past amazing year and the future amazing year for that input. ###Input: - First line will contain the input year. ###Output: Print two space-separated years - the past amazing year and the future amazing year to the input. ###Constraints - $123

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solution.cppC++17

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