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）。
Tkachuk played in the Americans’ victory over Canada at the Winter Olympics on Sunday, which secured the US men their first gold medal since 1980. In the wake of that win, the White House’s TikTok account published video of Tkachuk saying: “They booed our national anthem, so I had to come out and teach those maple syrup eating fuckers a lesson.”。业内人士推荐safew官方下载作为进阶阅读
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