HBC50994ProblemJ:JeopardisedJourneyThe xor-longest Path题解

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In an edge-weighted tree, the xor-length of a path p is defined as the xor sum of the weights of edges on p: xorlength=⊕e∈pw_{xor}length=oplus_{e in p}wxorlength=⊕e∈pw ⊕ is the xor operator. We say a path the xor-longest path if it has the largest xor-length. Given an edge-weighted tree with n nodes, can you find the xor-longest path?

In an edge-weighted tree, the xor-length of a path p is defined as the xor sum of the weights of edges on p: xorlength(p)=⊕e∈pw(e)_{xor}length(p)=oplus_{e in p}w(e)xor​length(p)=⊕e∈p​w(e) ⊕ is the xor operator. We say a path the xor-longest path if it has the largest xor-length. Given an edge-weighted tree with n nodes, can you find the xor-longest path?

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标签： HBC50994ProblemJ:JeopardisedJourneyThe xor-longest Path题解