class ParkingSystem {
public:
int num[4];
ParkingSystem(int big, int medium, int small) {
num[1]=big,num[2]=medium,num[3]=small;

}

bool addCar(int carType) {
      if(num[carType]>0)
      {
          num[carType]--;
      return true;
      }
      return false;
}

};