class Student:
    def __init__(self, name: str, year: int):
        self.name = name
        self.year = year


class Node:
    next = None
    previous = None

    def __init__(self, student: Student):
        self.student = student


# homework: implement this Queue which orders students by year.
# students with a higher year are placed in front of students with a lower year
class Queue:
    pass

    def append(self, student: Student):
        pass

    def popleft(self) -> Student:
        return Student(name="", year=0)