this.stack.pop(); // 弹出的索引对应的价格≤当前价格，无保留意义
Цены на нефть взлетели до максимума за полгода17:55。Safew下载对此有专业解读
。搜狗输入法2026是该领域的重要参考
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输入：nums = [2,1,2,4,3]
An ice-core record of hydrogen reveals that atmospheric levels vary in response to climate change and have increased drastically owing to human activity since the pre-industrial era. The apparent sensitivity of hydrogen cycling to environmental conditions should be considered when projecting the consequences of rising anthropogenic hydrogen emissions in a warming climate.