introduced solid-state memory. The IBM 1260 was used for adding machine-readable
习题链接：LeetCode 581. 最短无序连续子数组
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与苏联当局交恶后，塔可夫斯基愈发频繁地显露出自己脆弱、多愁善感的一面。对儿子的思念成为他日记中最持久的主题。1985年，流亡中的塔可夫斯基在瑞典哥特兰岛完成了《牺牲》的拍摄，这部作品他在影像上达到了前所未有的宗教和哲学寓言的强度：面对世界末日的到来，为了换回人类的一线生机，片中的主人公决意献出一切。在影片制作期间，塔可夫斯基被确诊身患肺癌。拍摄结束后，他前往巴黎入院治疗，病痛的折磨和对生命的思考，充斥于那段时间的日记。
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.