或许，这也是杨植麟比别人更多一点耐心的原因。生存下来只是第一步，站上更适合自己的生态位，寻找关键技术的制胜点，才是关乎生死的关键命题。
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!
，详情可参考Line官方版本下载
Then the wrapper script is almost trivially simple:
if (left === n - 1) return 0;