Python easy and best O(N) solution
Intuition\n Describe your first thoughts on how to solve this problem. \nplaying with maximum and minimum\n# Approach\n Describe your approach to solving the pr
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nplaying with maximum and minimum\n# Approach\n<!-- Describe your approach to solving the problem. -->\niterating\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\nO(N)\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\nO(N)\n# Code\n```\nclass Solution:\n   \n    def maximumValueSum(self, nums: List[int], k: int, edges: List[List[int]]) -> int:\n        total = sum(nums)\n        \n        total_diff = 0\n        positive_count = 0\n        min_abs_diff = float(\'inf\')\n        \n        for num in nums:\n            diff = (num ^ k) - num\n            \n            if diff > 0:\n                total_diff += diff\n                positive_count += 1\n            min_abs_diff = min(min_abs_diff, abs(diff))\n        \n        if positive_count % 2 == 1:\n            total_diff -= min_abs_diff\n        \n        return total + total_diff\n```
['Python3']