Vehicle Tolls

With inheritance, a subclass reuses its parent's behaviour and adds its own. Every vehicle pays a toll; a truck is a vehicle that pays extra for its axles.

Each vehicle is one of:

• motorbike: pays 2.
• car: pays 5.
• truck <axles>: pays the car rate 5, plus 3 for every axle beyond the first two.

Implement vehicle_tolls(vehicles).

Input

vehicles: The vehicles passing the toll gate.

Output

Return the total toll collected.

Restricciones

0 ≤ number of vehicles ≤ 100,000

2 ≤ axles ≤ 10

Ejemplos

Entrada:
vehicles = ["car", "motorbike", "truck 4"]

Salida esperada:
expected = 18

Entrada:
std::vector<std::string> vehicles = {"car", "motorbike", "truck 4"};

Salida esperada:
long long expected = 18;

Entrada:
string[] vehicles = new string[] {"car", "motorbike", "truck 4"};

Salida esperada:
long expected = 18;

Entrada:
vehicles = ["truck 2", "truck 3"]

Salida esperada:
expected = 13

Entrada:
std::vector<std::string> vehicles = {"truck 2", "truck 3"};

Salida esperada:
long long expected = 13;

Entrada:
string[] vehicles = new string[] {"truck 2", "truck 3"};

Salida esperada:
long expected = 13;

Referencias

Este reto está adaptado para CodeUtility. Sigue el enunciado y las restricciones indicadas arriba.

• Microsoft Learn, Object-oriented programming in C#