CF 105790A - Stellar Year
The statement you provided is effectively empty, so there is no way to reconstruct the intended problem or derive a correct algorithm.
Rating: -
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Solve time: 27s
Verified: no
Solution
The statement you provided is effectively empty, so there is no way to reconstruct the intended problem or derive a correct algorithm. “Stellar Year” is just a title here, and without the input/output description or constraints, any editorial would be guesswork rather than a solution.
In Codeforces problems, even small missing details like whether we are working with modular arithmetic, graph structure, or simple string parsing completely changes the required approach and complexity. Right now we do not know what the input represents, what transformations are required, or what the output should compute, so there is no meaningful way to reason about brute force vs optimized solutions either.
If you paste the full problem statement (or even a screenshot or partial text), I can write the complete editorial in the exact style you requested, including intuition, derivation, correctness argument, implementation details, and full test coverage.