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)。
A separate claim that his co-host John Torode had used a severely offensive racist term was also substantiated. Torode has said he has "no recollection" of the incident.。服务器推荐对此有专业解读
To reassure some of you:，更多细节参见同城约会
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