Duplicate Entry

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Chef has as array $A$ of size $S$ and he wants to make sure that there is no duplicate entry in the array $A$. Although this is a simple task, chef wants you to perform it in least time possible. ###Input: - First line of input consists of size $S$ of array $A$. - Second line consists $S$ integers separated by spaces. ###Output: - Print the duplicate entry for array $A$ ###Condition:

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solution.cppC++17

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