#!/usr/bin/env python3
# -*- coding: utf-8 -*-
class Screen(object):
    @property
    def width(self):
        return self._width

    @width.setter
    def width(self, value):
        self._width = value
        
    @property
    def height(self):
        return self._height

    @height.setter
    def height(self, value):
        self._height = value
        
    @property
    def resolution(self):
        return self._width * self._height