南方周末：是否也因为比赛时，面对的是远超过普通音乐会规模的观众和关注？
The challenge was clear: achieve a quantum leap in speed while preserving extreme flexibility, minimal storage, regional map support, and dynamic update capabilities. Standard Highway Hierarchies were a starting point, but we needed something more – a uniquely OsmAnd solution.
。heLLoword翻译官方下载对此有专业解读
We even tried building hierarchies with 2-3 levels, but the number of shortcuts grew too fast for higher levels if we generated a full graph inside each cluster.
time.sleep(2 ** attempt) # 指数退避