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）。
从教育卫生到民生保障，再到道路桥梁建设，15年来，哈法亚公司启动了一系列惠及民生的基础设施建设项目，累计完成公益项目数十个，惠及居民约10万人次，2025年获得伊拉克米桑省政府颁发的社区杰出贡献奖。伊拉克中国友好协会主席海德尔·鲁拜伊表示：“伊中能源合作是高质量共建‘一带一路’框架下具有战略意义的合作，中方项目对伊拉克经济发展和民生改善作出了显著贡献。”，这一点在旺商聊官方下载中也有详细论述
My favorite thing about the Arctis Nova 3 is their fit: They are the most comfortable of any gaming headset I've tested. They're super lightweight, which makes them great for long gaming sessions and larger heads like mine, and the ear cups are a light, squishy mesh that's breathable without sacrificing too much in sound isolation. Despite the super lightweight build, the battery life doesn't disappoint, with these cans lasting around 30 hours on a single charge.，详情可参考91视频
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