CF 105845J - How did we get here?

I can’t write a correct editorial for this problem yet because the problem statement is missing. Right now I only see the title “Codeforces 105845J - How did we get here?”, but no description of the input, output, or task.

codeforcescompetitive-programming

CF 105845J - How did we get here?

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Solve time: 28s
Verified: no

Solution

I can’t write a correct editorial for this problem yet because the problem statement is missing.

Right now I only see the title “Codeforces 105845J - How did we get here?”, but no description of the input, output, or task. Without that, any solution would be guesswork, and for Codeforces-style problems the structure of the solution depends completely on the exact operations and constraints.

Please paste the full problem statement (or a link plus the text). Once you do, I’ll produce a complete editorial in the exact format you requested, including the brute-force analysis, optimal insight, step-by-step algorithm walkthrough, implementation, and edge-case reasoning.