faster than 94.02% solutions (one liner easy solution)
\nclass Solution:\n    def strWithout3a3b(self, A: int, B: int) -> str:\n        return [\'a\']*A + [\'b\']*B\n
```\nclass Solution:\n    def strWithout3a3b(self, A: int, B: int) -> str:\n        return [\'a\']*A + [\'b\']*B\n```
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