Dave loves Black Widow

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Dave (Dangerous Dave) is not dangerous anymore. He has fallen in love with Black Widow. Both of them are in SSN campus for Invente (mainly for taking pics near clock tower). Dave wants to use this opportunity to express his love towards Black Widow. He is planning to propose Black Widow with an array of numbers as a gift. He finds out from Bruce Banner that Black Widow likes palindromic array. U

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solution.cppC++17

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