Birthday xor

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Arya's birthday is here and he has received many gifts. He has received a total of N gifts from his N friends. Each of these friends has gifted him with K numbers. Now, for each of these gifts he received, Arya has calculated the XOR of all the numbers in the i-th gift. Furthermore, he found the bitwise AND, S of all these XOR values. Since he hates being the center of attention in a party, he h

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solution.cppC++17

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