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A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
，这一点在同城约会中也有详细论述
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RUN dnf install -y ${BASE_PKG} && \
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36