CF 105775C - The Tale of the Magical Lantern Grid

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Solve time: 30s
Verified: no

Solution

The problem statement for Codeforces 105775C - The Tale of the Magical Lantern Grid is missing from your prompt, so I can’t reconstruct the solution or write a correct editorial without risking inventing details.

To produce the full editorial in the format you specified (with correct algorithm, proofs, code, and edge cases), I need at least one of the following:

The full problem statement (preferred), or
A link plus permission to assume standard CF access content (still best to paste it), or
A summary of rules, inputs, outputs, and constraints.

Once you provide it, I’ll write the complete editorial in the exact structure you requested.