Фото: Roman Naumov / Global Look Press
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）。，详情可参考safew官方下载
4.1 496. 下一个更大元素 I。关于这个话题，WPS下载最新地址提供了深入分析
"I just think it's kind of a dangerous precedent for social media companies to request 3D scans of your face or official documents without there being any kind of knowledge of how that information is being protected or stored," he tells the BBC.