* @param arr 原数组
// 弹出栈中「温度≤当前值」的索引（这些天无法成为当前天的「下一个高温」）
。关于这个话题，服务器推荐提供了深入分析
Start with an audit of your existing content to identify which pieces should be prioritized for AIO optimization. Not every article deserves equal attention—focus first on content that already performs well in traditional search, addresses important topics for your audience, or covers queries where you have genuine expertise to offer. These high-potential pieces are most likely to generate meaningful results from optimization efforts.，更多细节参见51吃瓜
const stack = []; // 单调递增栈：存储每个独立车队的到达时间