weight=input('please input your weight:')

height=input('please input your height:')

weight=int(weight)

height=int(height)

bmi = weight/(height**2)

if bmi<18.5:

    print('过轻')

elif bmi<25:

    print('正常')

elif bmi<28:

    print('过重')

elif bmi<32:

    print('肥胖')

else:

    print('严重肥胖')