#90 امتياز
#75 جيد
#50 مقبول
#تحت 50 ضعيف
score = float(input('Enter your test score: \n '))
if score >= 90:
 print('You got an A grade!')
elif score >= 75:
    print('You got a B grade!')
elif score >= 50:
    print('You got a C grade!')
else:
    print('You got an F grade.')