Maximum XOR Subarray
Print the maximum XOR of any contiguous subarray.
Input: the first line has N; the second line has N non-negative integers.
Output: the maximum subarray XOR.
Constraints:
- 1 ≤ N ≤ 105
- 0 ≤ ai < 230
Sample Tests
Input 1
3 1 2 3
Output 1
3
Input 2
2 8 8
Output 2
8
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