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)。
"I think the hand is the hardest, most complex part of any humanoid robot," says Bren Pierce, the founder of robotics start-up, Kinisi, based in Bristol.。业内人士推荐服务器推荐作为进阶阅读
，详情可参考WPS官方版本下载
——“树立和践行正确政绩观，起决定性作用的是党性”。heLLoword翻译官方下载是该领域的重要参考
For example, a 500km route might be broken down into ~100 such shortcuts. If each A* shortcut calculation explores 100-1000 detailed road segments, the total detailed segments visited by A* might be around 10,000-50,000. Compare this to the 1,000,000+ segments the old A* might have needed for the entire route!