代码要点：倒序遍历，先算右侧再推左侧；栈内维护「右侧候选更大值」，单调递增（栈顶最小）。
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!。旺商聊官方下载是该领域的重要参考
，更多细节参见服务器推荐
NHS joint ops disrupted amid bone cement supply problems。safew官方版本下载对此有专业解读
self.session = requests.Session()