The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
“省市县乡领导班子将陆续换届，强调政绩观也很有针对性。”在开局之年的“第一课”上，习近平总书记道出了树立和践行正确政绩观的另一层深远考量。
。搜狗输入法2026对此有专业解读
Дания захотела отказать в убежище украинцам призывного возраста09:44，更多细节参见51吃瓜
// 记录答案：栈顶就是「当前元素右侧第一个更大值」（易错点3：别写反判断）