CF 103428A - Goodbye, Ziyin!
The problem statement section is empty, so there isn’t enough information to reconstruct what Codeforces 103428A - “Goodbye, Ziyin!” is asking. An editorial depends completely on the operations, constraints, and output definition.
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Solve time: 34s
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Solution
The problem statement section is empty, so there isn’t enough information to reconstruct what Codeforces 103428A - “Goodbye, Ziyin!” is asking.
An editorial depends completely on the operations, constraints, and output definition. Right now we don’t know what the input represents, what transformation or decision is required, or even the nature of the task (graph, strings, greedy, math, etc.), so any solution I write would be a guess rather than a correct derivation.
If you paste the full problem statement (or even just the input/output description and constraints), I’ll write the complete editorial in the exact format you requested, including the algorithm walkthrough, proof idea, Python solution, and test cases.