2527. Find Xor-Beauty of Array

You are given a 0-indexed integer array nums.

The effective value of three indices i, j, and k is defined as ((nums[i] | nums[j]) & nums[k]).

The xor-beauty of the array is the XORing of the effective values of all the possible triplets of indices (i, j, k) where 0 <= i, j, k < n.

Return the xor-beauty of nums.

class Solution {
public:
    int xorBeauty(vector<int>& nums) {
        int res = 0;
        for(auto n : nums) res ^= n;
        return res;
    }
};