POJ 1741——Tree【树形DP & 点分树】
题目传送门DescriptionGive a tree with n vertices,each edge has a length(positive integer less than 1001).Define dist(u,v)=The min distance between node u and v.Give an integer k,for every pair (u,v) o...
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2019-11-15 19:44:26 ·
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