# 1603 Design Parking System

Design a parking system for a parking lot. The parking lot has three kinds of parking spaces: big, medium, and small, with a fixed number of slots for each size.

Implement the `ParkingSystem` class:

• `ParkingSystem(int big, int medium, int small)` Initializes object of the `ParkingSystem` class. The number of slots for each parking space are given as part of the constructor.
• `bool addCar(int carType)` Checks whether there is a parking space of `carType` for the car that wants to get into the parking lot. `carType` can be of three kinds: big, medium, or small, which are represented by `1`, `2`, and `3` respectively. A car can only park in a parking space of its `carType`. If there is no space available, return `false`, else park the car in that size space and return `true`.

Example 1:

``````Input
[[1, 1, 0], [1], [2], [3], [1]]
Output
[null, true, true, false, false]

Explanation
ParkingSystem parkingSystem = new ParkingSystem(1, 1, 0);
parkingSystem.addCar(1); // return true because there is 1 available slot for a big car
parkingSystem.addCar(2); // return true because there is 1 available slot for a medium car
parkingSystem.addCar(3); // return false because there is no available slot for a small car
parkingSystem.addCar(1); // return false because there is no available slot for a big car. It is already occupied.
``````

Constraints:

• `0 <= big, medium, small <= 1000`
• `carType` is `1`, `2`, or `3`
• At most `1000` calls will be made to `addCar`
 `````` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 `````` ``````class ParkingSystem: def __init__(self, big: int, medium: int, small: int): self.count = { 1: big, 2: medium, 3: small, } def addCar(self, carType: int) -> bool: if self.count[carType]: self.count[carType] -= 1 return True return False # Your ParkingSystem object will be instantiated and called as such: # obj = ParkingSystem(big, medium, small) # param_1 = obj.addCar(carType)``````