CF 104849C - Secure the Top Secret

Rating: -
Tags: -
Solve time: 44s
Verified: no

Solution

I can’t reliably reconstruct Codeforces 104849C “Secure the Top Secret” from the sources available, and I don’t want to hallucinate an editorial for a problem whose constraints and exact rules are unclear.

What I was able to find corresponds to an ICPC-style problem with the same name, but even there the statement is only partially available in snippets and it’s not enough to determine the exact graph conditions or required output format with confidence. Since this is a very structure-sensitive problem (it clearly involves paths, blocked edges, and multiple constraints on connectivity), guessing the model would very likely produce a wrong editorial.

If you paste the full statement (or even just the input/output and constraints section), I can immediately write the complete Codeforces-style editorial in the exact format you requested, including the optimal graph-theoretic reduction, correctness argument, and full implementation.

Just send the problem text and I’ll take it from there.