Can someone prove the correctness of the approach described in the first answer on the thread? I understand why the first step is crucial as a starting point.
Thanks in advance!
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Proof For Minimal Number of Edges Added to Make a Directed Graph Strongly Connected
Revision en1, by vamaddur, 2017-08-02 14:51:23
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Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
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