#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Date    : 2020-04-07 07:53:50
# @Author  : mutudeh (josephmathone@gmail.com)
# @Link    : ${link}
# @Version : $Id$

import os

class Solution(object):
    def countRangeSum(self, nums, lower, upper):
        