Smart Home Device Management

You are required to implement a smart home system to manage various devices. The system supports commands to turn devices on, off, and set them to standby. Additionally, the system should be able to query the status of a device and list devices by their state.

The commands are as follows:

• TURN_ON <device>: Turn the specified device on.
• TURN_OFF <device>: Turn the specified device off.
• STANDBY <device>: Set the specified device to standby mode.
• STATUS <device>: Query the current status of the specified device. If the device is not registered, its status is OFF.
• LIST_ON: List all devices that are currently on.
• LIST_OFF: List all devices that are currently off.
• LIST_STANDBY: List all devices that are in standby mode.

The state of a device, denoted by \( S \), can be one of the following: \[ S \in \{\text{ON}, \text{OFF}, \text{STANDBY}\} \]

When executing a sequence of commands, the system should process them in order and produce output only for the commands that request information (STATUS, LIST_ON, LIST_OFF, and LIST_STANDBY). The overall result is the JSON array representation of these outputs.

For example, given the following sequence:

TURN_ON Television
TURN_ON Lamp
STANDBY Television
TURN_OFF Lamp
STATUS Television
STATUS Lamp
LIST_ON
LIST_OFF
LIST_STANDBY

The output should be:

["STANDBY", "OFF", [], ["Lamp"], ["Television"]]

inputFormat

The input is given from stdin and consists of a series of commands separated by newlines. Each command follows one of the formats described above. The input ends at EOF.

outputFormat

The output should be printed to stdout as a JSON array representation of the results for each STATUS and LIST command in the order they are encountered.

For example, for the sample given in the description, the output should be:

["STANDBY", "OFF", [], ["Lamp"], ["Television"]]

## sample

TURN_ON Television
STATUS Television
LIST_OFF

["ON", []]