automatically, but C offers no functions for using the stack (which is funny
What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.
。关于这个话题，夫子提供了深入分析
on the outside of the envelope for lookup at the processing center. This
但问题是，只盯着蒸馏看，其实有很大问题。