Chef and String

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The chef's teacher gave him a string and want to him to find the length of the longest string (which can be formed by deleting some character of the original string) in which all letters will have even frequency. ### Input - First-line will contain $T$, the number of testcases. Then the testcases follow. - Each testcase contains of a $2$ line of input. - First-line contain the length of the strin

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solution.cppC++17

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