public void addRoom(String showName, String dei, Room room){
        Days day = Days.valueOf(dei);
        int d = day.ordinal();
        for (Show show : days[d].getShows()) { //iter the shows of that day
            if (!show.getName().equals(showName)){ //see if there is a show with tha correct name
                for (Room room1 : show.getRooms()) { //iter the rooms of the given show
                    if (!room1.getName().equals(room.getName())) { //see if there is a room with the same name
                        show.addRoom(room);
                    }
                }
            }
        }
    }