height = input('height: ')

weight = input('weight: ')

h = float(height)

w = float(weight)

BMI = w/(h**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')

else:

print('严重肥胖')