Python || One line || O(1)
\nclass Solution:\n  def fillCups(self, amount: List[int]) -> int:\n    return max(max(amount), sum(amount) // 2 + sum(amount) % 2)\n
```\nclass Solution:\n  def fillCups(self, amount: List[int]) -> int:\n    return max(max(amount), sum(amount) // 2 + sum(amount) % 2)\n```
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