union object_info *j = h->next;
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，这一点在爱思助手下载最新版本中也有详细论述
Что думаешь? Оцени!，更多细节参见夫子
Shortcut Pre-calculation: For the most commonly used speed profiles, the travel costs (time/distance) for shortcuts between border points within each cluster are pre-calculated and stored. (Each border point effectively has an "entry" and "exit" aspect for directed travel).