let p = head; // 遍历链表的指针
In Jersey, Trudi Roscouet said: "Women's health is not a priority for government".
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The answer: OsmAnd's custom-built Highway Hierarchy (HH) Routing. This isn't your standard routing engine; it's a ground-up redesign, meticulously engineered to overcome the unique challenges of providing advanced navigation on compact, offline-first map data.
// 核心过滤：弹出栈中「≤当前元素」的数（易错点2：必须是≤，不是<）