Option 1: The system can update the cost of that specific shortcut in the base graph and quickly re-run the Dijkstra search (Step 2) on the abstract graph to find an alternative high-level path.
* 3. 单调递增栈：存储独立车队的到达时间，cur栈顶才push（否则合并）。
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Фото: Petrov Sergey / news.ru / Global Look Press
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