Be aware that pitfalls await for any couple, and that he/she can cheat at any point in time and space because, really at the end of the day, its their choice.
你要认识到，每一对恋人都可能遇到意想不到的问题或困难，他或者她可以在任何时间、任何地方说谎，因为说到底那是他们的选择。
Meanwhile, space decomposition was implemented by eight-branch trees structure in the process of the merger of couple-point which was selected by greedy choice algorithm.
在点对合并的过程中使用八叉树结构进行空间分解，使用贪婪算法来选择点对。
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