#!/usr/bin/env python3

# -*- coding: utf-8 -*-

h=input('height:')

w=input('weight:')

height=float(h)

weight=float(w)

BMI=weight/(height**2)

if BMI<18.8:

    print('过轻')

elif BMI<25:

    print('正常')

elif BMI<28:

    print('过重')

elif BMI<32:

    print('肥胖')

else:

    print('严重肥胖')