After taking it out of the box and plugging it in, you'll have to connect to your home Wi-Fi. Then, the Dreamie presents you with a tutorial to walk you through navigating its menus and physical controls. There's a touch strip on the top of the device to turn on the lamp and adjust its brightness, as well as the brightness of any ambient color "scene" that's active. By dragging the dot at the center of the lamp screen, you can throw the light in any particular direction. Volume is adjusted by turning the dial that's around the clockface. To access the menu for alarms and other settings, swipe up. To cycle through the different content modes — ambient, wind down and noise mask — just swipe down from the top of the screen. Easy peasy.
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)。。Line官方版本下载对此有专业解读
，更多细节参见夫子
Enter, the Omni-Trap.。WPS官方版本下载对此有专业解读
終止聯邦層級的多元、公平、共融（DEI）計劃
Streams are iterables.