2425. Bitwise XOR of All Pairings

class Solution:
    def xorAllNums(self, nums1: List[int], nums2: List[int]) -> int:
        res = 0
        if len(nums2) & 1:
            for v in nums1:
                res ^= v
        if len(nums1) & 1:
            for v in nums2:
                res ^= v
        return res