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a XOR problem

Revision en2, by i.trofimow, 2016-12-26 00:38:08

Given 2 mutisets A and B, |A| = |B|, |A|, |B| <= 10^5, 0 <= elements in set <= 10^18. The task is to find such X that A ^ X = B or say that such X doesnt exists. How can one do that? A ^ X means foreach element of A xor it with X

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  Rev. Lang. By When Δ Comment
en2 English i.trofimow 2016-12-26 00:38:08 47 Tiny change: 'e do that?' -> 'e do that? A ^ X means foreach element of A xor it with X'
en1 English i.trofimow 2016-12-26 00:37:05 196 Initial revision (published)