http://mirror.codeforces.com/gym/100253/attachments M — Winnie-the-Pooh Needs Help . How can i solve this ?
http://mirror.codeforces.com/gym/100253/attachments M — Winnie-the-Pooh Needs Help . How can i solve this ?
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Removing each edge and doing bfs is too costly. In stead, we remove each vertex and do BFS finding shortest and second shortest path to each node via a different children from root. Here's my code : http://ideone.com/sCOHAQ