需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
// Shell原始步长序列: n/2, n/4, ..., 1
，更多细节参见heLLoword翻译官方下载
Finally they had a breakthrough. They found an address that Harp believed was likely to feature a Flaming Alamo brick wall, and was on the sofa customer-base list.
Медведев вышел в финал турнира в Дубае17:59