height = 1.80
weight = 80.5
bmi=weight/height/height
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')