#第一章
score = [70, 80, 90]
min_grade = None
max_grade = None
average_grade = None
print("國文:%d"%score[0])
# min_grade_key = score.index(min(score))
# print("最低分:%d"%score[min_grade_key])
min_grade = min(score)
print("最低分:%d"%min_grade)


