height = 1.75

weight = 80.5

BMI = weight/(height**2)

if BMI < 18.5:

 print('过轻')

elif 18.5<BMI<=25:

    print('正常')

elif 25<BMI<=28:

    print('过重')

elif 28<BMI<=32:

    print('肥胖')

elif BMI>32:

 print('严重肥胖')