# -*- coding: utf-8 -*-
"""
Created on Tue Nov  5 15:54:06 2019

@author: student
"""


# -*- coding: utf-8 -*-
"""
Created on Tue Nov  5 15:54:06 2019

@author: student
"""


# -*- coding: utf-8 -*- Created on Tue Nov  5 15:54:06 2019  @author: student