# Наследование

# issubclass(sub, par)

class Vehicle:
    
    def __init__(self, name, max_speed, mileage):
        self.name = name
        self.max_speed = max_speed
        self.mileage = mileage

    def display_info(self):
        print(f"Vehicle Name: {self.name}, Speed: {self.max_speed}, Mileage: {self.mileage}")


class Bus(Vehicle):
    pass


class Person:
    
    def __init__(self, name):
        self.name = name

    def get_name(self):
        return self.name
    
    def is_employee(self):
        return False
    

class Employee(Person):

    def is_employee(self):
        return True
    

class Shape:
    pass

class Ellipse(Shape):
    pass

class Circle(Ellipse):
    pass

class Polygon(Shape):
    pass

class Triangle(Polygon):
    pass

class Rectangle(Polygon):
    pass

class Square(Rectangle):
    pass


def main():
    shapes = [
    Polygon(), Triangle(), Ellipse(), Polygon(), Triangle(), Ellipse(), Polygon(), Square(), Polygon(), Circle(),
    Shape(), Polygon(), Triangle(), Circle(), Ellipse(), Shape(), Circle(), Rectangle(), Circle(), Circle(),
    Square(), Square(), Circle(), Rectangle(), Rectangle(), Polygon(), Polygon(), Polygon(), Square(), Square(),
    Rectangle(), Square(), Rectangle(), Polygon(), Circle(), Triangle(), Rectangle(), Shape(), Rectangle(),
    Polygon(), Polygon(), Ellipse(), Square(), Circle(), Shape(), Polygon(), Ellipse(), Triangle(), Square(),
    Polygon(), Triangle(), Circle(), Rectangle(), Rectangle(), Ellipse(), Triangle(), Rectangle(), Polygon(),
    Shape(), Circle(), Rectangle(), Polygon(), Triangle(), Circle(), Polygon(), Rectangle(), Polygon(), Square(),
    Triangle(), Circle(), Ellipse(), Circle(), Shape(), Circle(), Triangle(), Ellipse(), Square(), Circle(),
    Triangle(), Polygon(), Square(), Polygon(), Circle(), Ellipse(), Polygon(), Shape(), Triangle(), Rectangle(),
    Circle(), Square(), Triangle(), Triangle(), Ellipse(), Square(), Circle(), Rectangle(), Ellipse(), Shape(),
    Triangle(), Ellipse(), Circle(), Shape(), Polygon(), Polygon(), Ellipse(), Rectangle(), Square(), Shape(),
    Circle(), Triangle(), Circle(), Circle(), Circle(), Triangle(), Ellipse(), Polygon(), Circle(), Ellipse(),
    Rectangle(), Circle(), Shape(), Polygon(), Polygon(), Triangle(), Rectangle(), Polygon(), Shape(), Circle(),
    Shape(), Circle(), Triangle(), Ellipse(), Square(), Circle(), Triangle(), Ellipse(), Square(), Circle(),
]

    ret = [i for i in shapes if isinstance(i, (Polygon))]
    print(len(ret))
# 29 33 79

if __name__ == "__main__":
    main()