// 易错点1：未初始化数组长度 → 赋值res[i]时会报错；无需fill(0)，因为每个位置都会显式赋值
We wanted a scenario where, say, 5 well-placed border points could efficiently represent an area with 5,000 internal points and 10,000 road edges. This would reduce those 10,000 edges to just 5*4/2 = 10 shortcuts for routing through that cluster at a high level – an incredible 1:1000 point ratio and a 30x reduction in edges to consider for the high-level path!。关于这个话题，WPS下载最新地址提供了深入分析
Что думаешь? Оцени!，这一点在服务器推荐中也有详细论述
if(h->ref || (data_bytes+sizeof(union alloc_header)) > (16LL<<h->bucket)) {。业内人士推荐Line官方版本下载作为进阶阅读
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