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She said her experience was extreme and she felt she did not have anyone to talk to.

N-Closest Algorithm。Line官方版本下载是该领域的重要参考

",".join(item.tags),，详情可参考一键获取谷歌浏览器下载

代码要点：倒序遍历，先算右侧再推左侧；栈内维护「右侧候选更大值」，单调递增（栈顶最小）。