Юлия Сычева (корреспондент)
ВсеЛюдиЗвериЕдаПроисшествияПерсоныСчастливчикиАномалии，详情可参考一键获取谷歌浏览器下载
* 进阶：使用Sedgewick步长序列（更高效）。safew官方版本下载对此有专业解读
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.