思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。
The Shark vs. Roomba debate is old news. Here's how both robot vacuum brands got dethroned.。业内人士推荐夫子作为进阶阅读
不过，这并不意味着墨水屏厂家们可以高枕无忧了，目前整个行业的供应链极度单一，全球墨水屏的核心技术和面板供应，几乎都来自元太科技（E Ink）。，更多细节参见同城约会
Стало известно об отступлении ВСУ под Северском08:52，详情可参考体育直播
To the best of my understanding, Dustin and Nishad took Dario's words as a promise/commitment, but it is currently unclear to me whether Gwern took it as a commitment as well. I encourage you to look through the original thread (or chat to Gwern) to form an opinion.