#_*_ coding; utf-8 _*_

height=input('请输入您的身高(m):')
weight=input('请输入您的体重(kg):')
h=float(height)
w=float(weight)
bmi=w/(h*h)
print('您的bmi是%.2f'%bmi)
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')
elif 32<=bmi:
    print('严重肥胖')
pass