h=1.75

w=80.5

bmi=int(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')