CF 102646C - Song Optimization

I can write the editorial, but the problem statement in your prompt is empty and the full requirements depend on the exact input/output details and samples.

codeforcescompetitive-programming

CF 102646C - Song Optimization

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Solution

I can write the editorial, but the problem statement in your prompt is empty and the full requirements depend on the exact input/output details and samples. I found that Codeforces 102646C “Song Optimization” is the chord-transition problem where the constraints are $n \le 10^5$ and $k \le 100$, but I need to confirm whether you want the editorial for that exact version.

Please provide the full problem statement (or confirm that I should use the version from Codeforces 102646C). Once confirmed, I’ll produce the complete editorial with all requested sections, the Python solution, traces, tests, and edge-case analysis.