Every proxy in this list is re-tested every 30 minutes by a real HTTP request through it to our own echo endpoint — not pinged, not assumed. Every entry here last passed that test within 5.5 hours ...
文章浏览阅读211次。本题为华为OD机试真题，要求在二叉树结构的山区救援网络中，寻找从根节点到叶子节点的安全且体力消耗最小的路径。安全约束为路径上最高与最低海拔差不超过阈值S；体力消耗按上坡alpha×升高、下坡beta×降低计算。需优先满足海拔跨度约束，再最小化总消耗，消耗相同时取 ...
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