# Строитель
class Builder:
    def prepare_floor(self):
        pass

    def lay_tiles(self):
        pass

    def apply_putty(self):
        pass

    def plaster_walls(self):
        pass

    def prime_wall(self):
        pass

    def paint_wall(self):
        pass

# Плиточник
class Tiler(Builder):
    def prepare_floor(self):
        print("Preparing floor")

    def lay_tiles(self):
        print("Laying tiles")

# Отделочник
class Finisher(Builder):
    def apply_putty(self):
        print("Applying putty")

    def plaster_walls(self):
        print("Plastering walls")

# Маляр
class Painter(Builder):
    def prime_wall(self):
        print("Priming wall")

    def paint_wall(self):
        print("Painting wall")

# Прораб
class Foreman:
    def __init__(self):
        self.builder = None

    def set_builder(self, builder):
        self.builder = builder

    def make_floors(self):
        self.builder.prepare_floor()
        self.builder.lay_tiles()

    def level_walls(self):
        self.builder.apply_putty()
        self.builder.plaster_walls()

    def paint_walls(self):
        self.builder.prime_wall()
        self.builder.paint_wall()

    def turnkey_works(self):
        self.make_floors()
        self.level_walls()
        self.paint_walls()

# Пример использования
foreman = Foreman()

tiler = Tiler()
foreman.set_builder(tiler)
foreman.turnkey_works()

finisher = Finisher()
foreman.set_builder(finisher)
foreman.turnkey_works()

painter = Painter()
foreman.set_builder(painter)
foreman.turnkey_works()