height = float(input('your hight(m) is: '))

weight = float(input('your weight(kg) is: '))

bmi = weight/height**2

print('your bmi is:{0:.2f}'.format(bmi))

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')

else:

    print('严重肥胖')