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）。
"We're going to get there in steps, continue to take down risk as we learn more and we roll that information into subsequent designs," Isaacman said told CBS News. "We've got to get back to basics."，推荐阅读爱思助手下载最新版本获取更多信息
，这一点在heLLoword翻译官方下载中也有详细论述
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Deficit is the highest ever recorded by an English club，详情可参考safew官方下载