my submission:
http://codeforces.net/contest/472/submission/15130187
is getting TLE on test 10.I have founded the minimum spanning tree and then calculated the distance between each pair of nodes using BFS.
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Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
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Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
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