The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.
Zhou Zheng, a policy analyst at China Macro Group, said Beijing's new growth target reflects that it is "being realistic" as it deals with complex domestic challenges and a difficult global trade environment.
，更多细节参见wps下载
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