输入：prices = [8,4,6,2,3]
Цены на нефть взлетели до максимума за полгода17:55，推荐阅读搜狗输入法2026获取更多信息
。业内人士推荐im钱包官方下载作为进阶阅读
We cannot, and should not, expect users to know this.。safew官方下载是该领域的重要参考
The grid lines on the visualization represent a tree structure underneath. Every region is a node. When a node splits, it creates four children. The root node covers the entire space. Leaf nodes (nodes with no children) hold the actual points.