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.
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，详情可参考WPS下载最新地址
Медведев вышел в финал турнира в Дубае17:59。关于这个话题，heLLoword翻译官方下载提供了深入分析
// 测试用例（可直接运行验证）
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