Valentine Number

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A number is called ‘Valentine number’ when the sum of the digits is even but the number is itself odd. You are given a non-negative integer s, consisting of n digits. You can delete some digits to make the given number Valentine, without changing the order of the digits. The resulting number shouldn't contain leading zeros. You can delete any number of digits between 0 (do not delete any digits

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solution.cppC++17

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