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）。
Per-script thresholds would dramatically reduce false positive rates. Treating Mathematical Alphanumeric Symbols with the same urgency as Cyrillic makes no sense when the data shows a 0.145 gap in mean SSIM between them.
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Израиль нанес удар по Ирану09:28
职级落差：比庞若鸣原职位低一级的工程师，年薪通常在77.8万美元左右。
Flavor Flav is a longtime supporter of women’s sports and attended various Olympic competitions this month. He posted his invitation on Monday, shortly after the women turned down the trip to Washington.