class StudentGrade:
    def __init__(self, name):
        self.name = name
        self.scores = {}

    def update_score(self, subject, score):
        self.scores[subject] = score

    def is_passed(self):
        average = sum(self.scores.values()) / len(self.scores)
        return average >= 60

student = StudentGrade("홍길동")
student.update_score("수학", 50)
student.update_score("영어", 80)

print(student.is_passed())