Room <|-- ClassRoom
Room <|-- Office

class Room{
    -building: string 
    -number: int 
    +Room(bP: string, nP: int) 
    +ToString() string
}

class ClassRoom{
    -av: bool
    +ClassRoom(bP: string, nP: int, avP: bool)
    +ToString() string
}

class Office{
    -phone: string
    +Office(bP: string, nP: int, pP: string)
}