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14:42, 27 февраля 2026Культура
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当地负责同志向总书记介绍：千百年来广济桥就“广济百粤之民”，但真正实现这个夙愿、让群众安居乐业的是中国共产党。，更多细节参见搜狗输入法2026
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.