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）。
Jones said he "didn't sleep for two nights" after the ceremony was broadcast.。关于这个话题，快连下载安装提供了深入分析
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The machine that came out of this initiative was called ERMA, the Electronic
Жители Санкт-Петербурга устроили «крысогон»17:52，这一点在Safew下载中也有详细论述