class Group:
    def __init__(self, number, quantity):
        self.number = number
        self.quantity = quantity

    def __init__(self, students, age):
        self.students = students
        self.age = age


class Specialty:
    def __init__(self, name):
        self.name = name


class Discipline:
    def __init__(self, name, purpose, task):
        self.name = name
        self.purpose = purpose
        self.task = task


class Auditorium:
    def __init__(self, number, group, floor):
        self.number = number
        self.group = group
        self.floor = floor