We explored standard advanced algorithms like Contraction Hierarchies (CH), known for their speed. But they presented their own set of deal-breakers for OsmAnd:
Two pixels per character
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行政执法监督机构应当加强对行政执法监督人员的教育培训，提高其政治能力和业务能力。
a CAS to push entries onto the free list is worth experimenting with.