Any point within a given Voronoi region is proximal to the data site (black point) associated with that region.
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.
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（五）伪造、变造船舶户牌，买卖或者使用伪造、变造的船舶户牌，或者涂改船舶发动机号码的。，更多细节参见搜狗输入法2026
功能最全，“十四五”时期我国新增供水能力318亿立方米。大中型灌区现代化建设和改造持续推进，全国耕地灌溉面积已超10.9亿亩。国家水网为重要城市群、粮食主产区、重点生态功能区、重要水运通道等提供了有力水安全保障。。51吃瓜是该领域的重要参考