（一）已满十四周岁不满十六周岁的；
Credit: Hisense
。旺商聊官方下载对此有专业解读
再后来，谋生计是阿爸的第一任务。初三时，他为了赚学费去工地搬砖，复读了两年，还是没考上高中，他就去广东打工了。再后来，阿爸认识了阿妈，结婚之后，两个人就常年在外地。
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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