# -*- coding: utf-8 -*-
"""
Created on Thu Jun 25 10:01:18 2020

@author: gu
"""



# -*- coding: utf-8 -*-
"""
Created on Thu Jun 25 10:01:18 2020

@author: gu
"""



# -*- coding: utf-8 -*- Created on Thu Jun 25 10:01:18 2020  @author: gu