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Graph theory problem

By surajkvm007, history, 11 years ago, In English

Given a forest with n vertices, add edges to make it into a tree with minimal diameter. I tried many approaches but none of them passed system test cases.Please suggest some algorithm to solve this problem.

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11 years ago, hide # |
 
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The idea is to play with tree diameters while merging trees, you can use the ideas in the editorial for this problem (is very similar): http://codeforces.me/contest/455/problem/C

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11 years ago, hide # |
 
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can you link the problem?

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11 years ago, hide # |
 
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check the IOI 2013 Dreaming solution, it is almost the same problem.

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