蜡梅和梅花的“成名”也分早晚。蜡梅在宋代才被普遍栽培为一种观赏植物，而梅花受人关注的时间更久远。1975年，我国考古人员在安阳殷墟商代铜鼎中发现了梅核，这说明早在3000多年前，梅已用作食品。汉初，梅花就已经成为一种观赏性植物。《西京杂记》载：“汉初修上林苑，远方各献名果异树，有朱梅、胭脂梅”。
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.
，详情可参考同城约会
Юлия Мискевич (Ночной линейный редактор)，这一点在Line官方版本下载中也有详细论述
The government has proposed a similar measure, but has yet to confirm when the restrictions will come into place.