CF 105669H - Roulette
I’m missing the actual problem statement for Codeforces 105669H - Roulette (your input section is empty), so I can’t reconstruct the model, constraints, or intended solution reliably.
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Solve time: 25s
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Solution
I’m missing the actual problem statement for Codeforces 105669H - Roulette (your input section is empty), so I can’t reconstruct the model, constraints, or intended solution reliably.
For this kind of editorial, even small details like how the “roulette” behaves, what operations are allowed, and what needs to be computed completely change the approach (DP vs probability vs simulation vs combinatorics).
Please paste the full statement (or even a screenshot/text dump), and I’ll write the complete editorial in the exact style you requested.