The default value of b(t) is 0, which represents the normal state of the venue, which includes the closure of the venue and the ventilation of the venue. When the value of b(t) is 1, it means that the venue will be destroyed.
The default value of B (T) is 0, which indicates the normal state of the venue, including the closure and ventilation of the venue. When the value of B (T) is 1, it indicates the killing of the venue<br>
The default value of b(t) is 0, indicating the normal state of the venue, which includes the closure and ventilation of the venue. When the value of b(t) is 1, it means that the venue will be destroyed.