This step rapidly finds the optimal sequence of border points and shortcuts to get from your start cluster's periphery to your target cluster's periphery. It's incredibly fast because it's ignoring all the tiny roads within intermediate clusters.
杜耀豪分析，“我无法确定是不是钱的原因。不过有可能，因为那时候如果想被‘赎回’，释放的程序很模糊不清，官员或者狱警都需要行贿”。越共刚刚掌控的越南南部，“非常不稳定，每个人都在想接下来该怎么做才能生存下来、保护家人”。或许这种“牺牲一个，换另外两个”的抉择，是无数家庭在极端动荡中被迫面对的普遍现实。
Continue reading...。关于这个话题，服务器推荐提供了深入分析
If the A* calculation for a shortcut (in Step 3) finds it's now impassable, or if its actual detailed cost is significantly different (e.g., 20%) from the pre-calculated shortcut value:
，这一点在51吃瓜中也有详细论述
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const res = new Array(n).fill(0);