// 记录答案：栈顶就是「当前元素右侧第一个更大值」（易错点3：别写反判断）
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DigitalPrintPrint + Digital
An Ars Technica colleague recently bought a new M4 MacBook Air. I have essentially nothing bad to say about this hardware, except to point out that even in our current memory shortage apocalypse, Apple is still charging higher-than-market-rates for RAM and SSD upgrades. Still, most people buying this laptop will have a perfectly nice time with it.