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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.
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话音落下没多久,阿爸就笑嘻嘻地回了屋。
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(三)在铁路、城市轨道交通线路、桥梁、隧道、涵洞处挖掘坑穴、采石取沙的;