bmi = 80.5/(1.75)**2
if bmi < 18:
    print('太轻')
elif bmi >= 18.5 and bmi <= 25:
    print('正常')
elif bmi > 25 and bmi <= 28:
    print('过重')
elif bmi >28 and bmi <= 32:
    print('肥胖')
else:
    print('严重肥胖')