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）。
While there is much experts do not know about the object's re-entry, 70% of Earth is covered by sea so it is unlikely to have caused significant damage.
，详情可参考搜狗输入法下载
第二十条 违反治安管理有下列情形之一的，从轻、减轻或者不予处罚：，详情可参考爱思助手下载最新版本
The Starship upper stage separated from its Super Heavy booster nearly four minutes into flight as planned.。业内人士推荐51吃瓜作为进阶阅读