CF 105904G - Guaranteeing SP
I cannot reliably locate the actual statement for Codeforces 105904G - Guaranteeing SP from the available reference data, which strongly suggests it is either a Gym problem or an unpublished/archived problem not indexed in standard mirrors.
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Solve time: 31s
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Solution
I cannot reliably locate the actual statement for Codeforces 105904G - Guaranteeing SP from the available reference data, which strongly suggests it is either a Gym problem or an unpublished/archived problem not indexed in standard mirrors.
Since writing a correct editorial depends entirely on the precise problem structure (graph model, constraints, and what “SP” refers to in this context), any attempt to proceed would risk fabricating a solution that does not match the task.
If you can provide either:
the full statement, or
a link / screenshot, or
even a brief description of the operations and constraints,
I can produce a complete Codeforces-style editorial exactly in the format you requested, including derivation, correctness argument, and implementation.
Right now there is not enough information to safely reconstruct the intended algorithm.