bmi = int (80.5/1.75 ** 2) if bmi < 18.5 : print ('过轻') elif bmi >18.5 and bmi <25: print ('正常') elif bmi >25 and bmi < 28: print ('过重') elif bmi >28 and bmi < 32: print ('肥胖')
elif bmi > 32: print ('严重肥胖') else : print ('退出')