height=1.75

weight=80.5

bmi=weight/height/height

print("小明的bmi为:",bmi)

if bmi<18.5:

    print("小明体重过轻")

elif 18.5<=bmi<25:

    print("小明体重正常")

elif 25<=bmi<28:

    print("小明体重过重")

elif 28<=bmi<32:

    print("小明体重肥胖")

elif bmi>=32:

    print("小明体重严重肥胖")