class Light:
    def __init__(self, location):
        self.location = location
        self.power = False

    def turn_on(self):
        self.power = True

    def turn_off(self):
        self.power = False

    def is_on(self):
        return self.power

    def get_name(self):
        return f"{self.location} 전등"


class AirConditioner:
    def __init__(self):
        self.power = False

    def turn_on(self):
        self.power = True

    def turn_off(self):
        self.power = False

    def is_on(self):
        return self.power

    def get_name(self):
        return "에어컨"


class RobotCleaner:
    def __init__(self):
        self.power = False

    def turn_on(self):
        self.power = True

    def turn_off(self):
        self.power = False

    def is_on(self):
        return self.power

    def get_name(self):
        return "로봇청소기"


class SmartHub:
    def __init__(self):
        self.devices = []

    def register_device(self, device):
        self.devices.append(device)

    def activate_away_mode(self):
        turned_off = []
        already_off = []

        for device in self.devices:
            if device.is_on():
                device.turn_off()
                turned_off.append(device.get_name())
            else:
                already_off.append(device.get_name())

        message = "외출 모드 가동: "

        if turned_off:
            message += f"{', '.join(turned_off)}의 전원을 차단했습니다. "
        if already_off:
            message += f"{', '.join(already_off)}는 이미 대기 상태입니다."

        return message


living_light = Light("거실")
aircon = AirConditioner()
robot = RobotCleaner()

living_light.turn_on()
aircon.turn_on()

hub = SmartHub()
hub.register_device(living_light)
hub.register_device(aircon)
hub.register_device(robot)

print(hub.activate_away_mode())