需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full
，这一点在91视频中也有详细论述
Every point gets examined, regardless of where it sits. Points on the opposite side of the map get the same treatment as points right next to the query region. We're doing a lot of unnecessary work.
OpenAI is speaking out about changes and overhauls coming to its safety protocols and communications with law enforcement after a mass shooting in Tumbler Ridge, British Columbia, Canada, that left nine dead, including the shooter, earlier this month.