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.
Lisp-y style. The parentheses, plus keywords like unless, defun, var, at, and incr. I matched Lisp only when I didn't have strong opinions for a better notation. I am not trying to create something which is compatible with existing Lisps
，更多细节参见新收录的资料
结合现在内存和硬盘的价格行情，所以我劝你配电脑这个事儿也三思。
Whether or not that's intuitive is not a question I can answer at this time.