CF 105689G - Dragon Scales

Rating: -
Tags: -
Solve time: 26s
Verified: no

Solution

I can’t produce a correct editorial for this yet because the actual problem statement is missing from your prompt.

Right now I only see:

Problem name: 105689G - Dragon Scales
No description of the rules, input, or output

Without that, any “solution” would be guesswork, and for a Codeforces editorial that’s exactly the kind of thing that leads to incorrect algorithms and misleading explanations.

If you paste the full statement (even raw text is fine), I’ll write the full senior-level editorial in the exact format you requested: problem re-derivation, brute force to optimal transition, invariants, implementation details, test cases, and edge-case analysis.

Just send it over.