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）。
第五十条 办理退（免）税的出口业务发生销售折让、中止或者退回等情形的，纳税人应当缴回已退（免）税款。
，详情可参考WPS下载最新地址
His industry accolades include five Grammy awards, induction into both the UK Music Hall of Fame and the Rock and Roll Hall of Fame - both with Black Sabbath and as a solo artist, in separate years - and the Ivor Novello Award for Lifetime Achievement, with Black Sabbath.，详情可参考同城约会
the-independent.com，详情可参考heLLoword翻译官方下载