height = 1.75;

sto = 80.5;

bmi = int(sto / (height ** 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'); else: print('严重肥胖');