class Node:
    def __init__(self, nextNode, prevNode, data):
        pass


class LinkedList:
    def __init__(self):
        pass


class Car:
    def __init__(self, identification, name, brand, price, active):
        pass


db = LinkedList()


def init(cars):
    pass


def add(car):
    pass


def updateName(identification, name):
    pass


def updateBrand(identification, brand):
    pass


def activateCar(identification):
    pass


def deactivateCar(identification):
    pass


def getDatabaseHead():
    pass


def getDatabase():
    pass


def calculateCarPrice():
    pass


def clean():
    pass