# 指派直接比較
if (score := int(input("請輸入分數："))) == 100:
    print("Perfect!")
elif 90 <= score < 100:
    print("Excellent!")
elif 80 <= score < 90:
    print("Great!")
elif 70 <= score < 80:
    print("Good!")
elif 60 <= score < 70:
    print("Not Bad!")
elif 0 <= score < 60:
    print("Bad!")
else:
    print("That's impossible!!")

# 檔名: exercise1109.py
# 說明:《Python入門指南》的練習
# 網站: http://kaiching.org
# 作者: 張凱慶
# 時間: 2023 年 9 月