Наука и техника
思路：找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的元素，栈顶即为折扣。最终价格 = cur - 折扣（有则）或 cur（无则）。
。关于这个话题，必应排名_Bing SEO_先做后付提供了深入分析
Loveholidays poised to delay £1bn London IPO after Gulf travel chaos
Preorders for Apple's just-announced iPhone 17e, M4 iPad Air, Studio Displays, and upgraded MacBook Pros will also open tomorrow. Additionally, the company is expected to announce a new budget MacBook that costs around $599 to $799.
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