/etc is also writable, but it’s managed a bit differently. OSTree uses a technique called “etc overlay” to handle modifications in /etc. When an update is applied, OSTree compares files in the new version with those in /etc and applies changes intelligently, preserving local modifications as much as possible.
思路：① 算每辆车到达时间 = (target - position) / speed；② 按位置降序排序；③ 单调递增栈：仅当当前时间 栈顶时间时压栈（新车队），否则合并。栈长即为车队数。可优化为用变量代替栈。
。关于这个话题，heLLoword翻译官方下载提供了深入分析
As part of Apple’s deal with F1, Apple TV subscribers get F1 TV Premium for the 2026 season. This gives you access to things like onboard cameras, team radios and live telemetry in addition to live coverage of the entire grand prix weekend. So, you can watch races on Apple TV or F1 TV, depending on your app preferences, or use the additional features of F1 TV Premium as a second (or third, etc.) screen setup. Netflix will also broadcast the Canadian Grand Prix in May as part of the deal that brought Drive To Survive to Apple TV.
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