Python3 | 5 Lines | Easy understanding
\nclass Solution:\n    def largestWordCount(self, messages: List[str], senders: List[str]) -> str:\n        d = defaultdict(int)\n        for sender, size in zi
```\nclass Solution:\n    def largestWordCount(self, messages: List[str], senders: List[str]) -> str:\n        d = defaultdict(int)\n        for sender, size in zip( senders, [len(message.split()) for message in messages] ):\n            d[sender] += size\n        max_word = max(d.values())\n        return sorted([sender for sender, size in d.items() if size == max_word])[-1]\n```
['Python3']