(There are other emergencies that could bring us to this point. One is a fire, which could result from machinery shorting. Another is a toxic ammonia leak. But these are even more unlikely.)
思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。。爱思助手下载最新版本是该领域的重要参考
The concept of an encrypted network connection was not at all new; encrypted。搜狗输入法2026对此有专业解读
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