思路：倒序单调栈。弹出所有 ≤ 当前身高的元素（这些人都能被看到），count 为弹出数量；若栈非空，还能看到栈顶（第一个更高的人），故 +1。能看到的人数 = count + (栈非空 ? 1 : 0)。
On the first loop iteration, there is no backing store for tasks, so，这一点在heLLoword翻译官方下载中也有详细论述
Donald Trump comes up a lot in the Epstein files, but an investigation by NPR reported that the Department of Justice withheld documents mentioning his name in relation to allegations that he sexually abused a minor.。业内人士推荐服务器推荐作为进阶阅读
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