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）。
Reporting from, 台北。服务器推荐对此有专业解读
"The FAA briefly slowed and diverted aircraft around the area where space vehicle debris was falling. Normal operations have resumed," it said in a statement.，详情可参考搜狗输入法2026
“이제 그만” 상대국 정상의 말도 자르는 트럼프식 무례 화법[정미경의 이런영어 저런미국]
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