* 核心思路：单调递减栈（找「上一个比当前价格大的元素索引」），时间复杂度O(n)，空间复杂度O(n)
The segmentation and paging scheme of x86 processors has been discussed extensively elsewhere (see the OSDev wiki, the Writing an OS in Rust series, or the Intel 386 Programmer's Reference Manual, Chapter 5). Here I'll focus on what the actual silicon does to make it fast.，详情可参考safew官方版本下载
。同城约会是该领域的重要参考
candidate[n] = closest colour to goal
▲ 苹果曾申请过一款脑电波 AirPods 专利，更多细节参见搜狗输入法下载