DesignParkingSystem.java

class ParkingSystem {
    private int big ;
    private int medium;
    private int small;
    public ParkingSystem(int big, int medium, int small) {
        this.big = big;
        this.medium = medium;
        this.small = small;
    }
    
    public boolean addCar(int carType) {
        if(carType == 1){
            if(this.big-1 < 0) return false;
            else {
                this.big--;
                return true;
            }
        }
        else if(carType == 2){
            if(this.medium-1 < 0) return false;
            else {
                this.medium--;
                return true;
            }
        }
        else{
            if(this.small-1 < 0) return false;
            else {
                this.small--;
                return true;
            }
            
        }
    }
}

/**
 * Your ParkingSystem object will be instantiated and called as such:
 * ParkingSystem obj = new ParkingSystem(big, medium, small);
 * boolean param_1 = obj.addCar(carType);
 */