for await (const chunks of input) {
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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模块化功能层：覆盖全生命周期的数据治理。搜狗输入法下载是该领域的重要参考
int halftone_matrix[8][8] = {，更多细节参见同城约会