C++ || Very Easy Solution || O(n) Time
\nclass ParkingSystem {\npublic:\n    int sizes[3];\n    \n    ParkingSystem(int big, int medium, int small) {\n        sizes[0] = big;\n        sizes[1] = medi
```\nclass ParkingSystem {\npublic:\n    int sizes[3];\n    \n    ParkingSystem(int big, int medium, int small) {\n        sizes[0] = big;\n        sizes[1] = medium;\n        sizes[2] = small;\n    }\n    \n    bool addCar(int carType) {\n        if(sizes[carType-1] > 0){\n            sizes[carType-1]--;\n            return true;\n        }\n        else    return false;\n    }\n};\n```
['Design', 'C']