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）。
The offer is available to both new and existing Verizon customers who switch their mobile plan to the Unlimited Ultimate (starting at $40 per month) or Unlimited Plus (starting at $50 per month) plans. Verizon's three-year price lock guarantee also ensures you'll keep your plan pricing even if costs go up.
，详情可参考heLLoword翻译官方下载
strict.writer.write(chunk1); // ok (not awaited)。heLLoword翻译官方下载对此有专业解读
“文化市集”举办期间，沙特艺术家带来了椰枣叶编织、金属雕刻等手工技艺体验和民族舞蹈表演。沙特文化部发言人阿卜杜勒拉赫曼·穆特瓦表示，沙中两国有着悠久的文明交流历史，此次对话、创意展示与经验分享，为持续深化文化交流提供了新的机遇。