Что думаешь? Оцени!
圖像來源，Getty Images
，详情可参考WPS官方版本下载
"All of those family celebrations, the birthdays and the other events that they thought they were going to be part of - now, suddenly they can perhaps catch up on a bit of lost time."，这一点在Line官方版本下载中也有详细论述
* 核心思路：倒序单调栈（适配你的学习习惯），时间复杂度O(n)，空间复杂度O(n)
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