Alone in the trinity

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One day Vaibhav gave a task to Meena. He gave him an array $A$ of size $N$, array is of special type, each element is repeated exactly 3 times in this array except only one element appears only once. In this task Meena needs to find the element that occurs only once in this array. - $Note!$ You cannot use sorting in this problem ### Input - First line will contain $T$, number of testcases. The

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solution.cppC++17

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