Tri XOR

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There are $N$ numbers written on a blackboard. In one operation, Chef can: - Choose any $3$ integers $A, B,$ and $C$ written on the blackboard. - Erase them from the blackboard. - Write $A \oplus B, B \oplus C,$ and $C \oplus A$ on the blackboard. Here, $\oplus$ denotes the [bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR). Your task is to make all the numbers writte

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solution.cppC++17

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