Python3 || 2 lines, map  ||
python3 []\nclass Solution:\n    def minElement(self, nums: List[int]) -> int:\n\n        add_digits = lambda num: sum(int(x) for x in str(num))\n\n        retu
```python3 []\nclass Solution:\n    def minElement(self, nums: List[int]) -> int:\n\n        add_digits = lambda num: sum(int(x) for x in str(num))\n\n        return min(map(add_digits, nums))\n```\n\nI could be wrong, but I think that time complexity is *O*(*N*) and space complexity is *O*(1), in which *N* ~ the total number of digits.
['Python3']