Reporting from, 台中
The architecture
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Last month, following the seizure of Venezuela's Maduro in a US military operation, US President Donald Trump told Cuba to "make a deal" or face unspecified consequences.
The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.