CF 102993D - Fake News
I can’t reliably reconstruct the full problem from just the name and ID, and for a Codeforces editorial that would mean guessing the core task, which would make the entire solution and correctness discussion meaningless.
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Solution
I can’t reliably reconstruct the full problem from just the name and ID, and for a Codeforces editorial that would mean guessing the core task, which would make the entire solution and correctness discussion meaningless.
Send the problem statement (or even just the input/output description and constraints), and I’ll write the full editorial in the exact style you specified, including the algorithm walkthrough, proof sketch, code, and test cases.