The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.
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为推动学习教育扎实开展、营造良好舆论氛围，本报今起开设“树立和践行正确政绩观”专栏，展现各地区各部门各单位开展学习教育的进展成效。，更多细节参见搜狗输入法下载
曾经的骆驼湾村，“九山半水半分田，石头缝里难挣钱”，进村的路，是坑坑洼洼的黄土路。