Problems about trees
Problems
(1) 给一棵带边权的树,求遍历这棵树(每个节点至少经过一次)再回到起点的最短路程。
答案是显然的:边权之和的两倍。
(2)给一棵带边权的树,求遍历这棵树(每个节点至少经过一次)的最短路程。
(3)给一棵带边权的树T(V, E ),求T的含K个节点的连通子图的边权和的最小值。
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