// 题目要求找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的，栈顶即为折扣
Bell and Powell showed their gratitude to Smith, who also founded the charity Womb Transplant UK, by giving their son a middle name of Richard.
，详情可参考Line官方版本下载
The budget supermarket will pay its store assistants £13.50 per hour from April — just a month after an increase is due to take effect in March.。业内人士推荐Line官方版本下载作为进阶阅读
Платон Щукин (Редактор отдела «Экономика»)
// Stateful transform with resource cleanup