SortTaskFinal

from dataclasses import dataclass


@dataclass
class Student:
    name: str
    surname: str
    mathematics: int
    physics: int
    informatics: int

    def rate(self):
        return (self.mathematics + self.physics + self.informatics) / 3.0


def read_student(line: str) -> Student:
    fields = line.split(" ")
    return Student(
        name=fields[1],
        surname=fields[0],
        mathematics=int(fields[2]),
        physics=int(fields[3]),
        informatics=int(fields[4])
    )


def main():
    students = []
    with open("students.txt", 'r', encoding='UTF-8') as students_file:
        lines_count = int(students_file.readline())
        for student in students_file:
            students.append(read_student(student))

    students.sort(key=lambda student: student.rate(), reverse=True)

    for student in students:
        print("{surname} {name}".format(name=student.name, surname=student.surname))


if __name__ == "__main__":
    main()