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黎智英欺詐案上訴得直：定罪及刑罰被撤銷，出獄時間提前
。heLLoword翻译官方下载对此有专业解读
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)。
阿里千问将发布多款 AI 硬件
Amazon’s Fire TV Stick 4K Plus is on sale for $29.99, which is $5 shy of its best price. | Image: Amazon