height = 1.75 weight = 80.5

bmi = height/(weight*weight)

if bmi<18.5: print('小明的体重过轻')

elif bmi>18.5 and bmi<25: print('小明的体重正常')

elif bmi>=25 and bmi<28: print('小明的体重过重')

elif bmi>=28 and bmi<32: print('小明的体重肥胖')

else: print("小明严重肥胖")