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）。
The history of most human gestures is never written down, precisely because it is something we learn before literacy or memory and thus something we take entirely for granted.，推荐阅读safew官方版本下载获取更多信息
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00292-7，这一点在同城约会中也有详细论述
In addition to the groups behind the celeb bait ads, Meta says that it's upgraded its ability to detect scam ads that use cloaking, which has at times hindered its internal review systems. The company also sued a Vietnam-based advertiser it says used scam ads to hawk "deeply discounted items from well-known brands," including Longchamp.
Prometheus-compatible metrics