height = 1.75
weight = 80.5
bmi=weight/(height**2)
print(bmi)
if bmi<18.5:
    print("低于18.5：过轻"),
elif 18.5<bmi<25:
    print("18.5-25：正常"),
elif 25<bmi<28:
    print("25-28：过重"),
elif 28<bmi<32:
    print("28-32：肥胖"),
else:
    print("高于32：严重肥胖")