[python] Easy 4 line code
\nclass ParkingSystem:\n\n    def __init__(self, big: int, medium: int, small: int):\n        self.arr  =[big,medium,small]\n    def addCar(self, carType: int) 
```\nclass ParkingSystem:\n\n    def __init__(self, big: int, medium: int, small: int):\n        self.arr  =[big,medium,small]\n    def addCar(self, carType: int) -> bool:\n        if(self.arr[carType-1]):\n            self.arr[carType-1]-=1\n            return True\n        return False\n```
['Python3']