CF 104397G - Josephus Problem 2

I don't have enough information to write a correct editorial. The problem statement describes the task, but it does not provide the full input/output specification needed to derive and verify the algorithm.

codeforcescompetitive-programming

CF 104397G - Josephus Problem 2

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Solve time: 44s
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Solution

I don't have enough information to write a correct editorial.

The problem statement describes the task, but it does not provide the full input/output specification needed to derive and verify the algorithm. In particular, the prompt is missing the complete official statement (or additional samples), and this problem's intended solution cannot be reconstructed with confidence from the description alone.

If I were to invent an algorithm, it would risk being incorrect, and I would also be unable to produce:

  • a proven optimal algorithm,
  • a correct Python implementation,
  • worked examples matching the judge,
  • valid assert-based test cases.

Please provide one of the following:

  1. the full Codeforces statement (or the original PDF),
  2. the contest link for 104397G - Josephus Problem 2, or
  3. the missing part of the statement if it was truncated.

Once I have the complete problem, I'll produce the full editorial with all the requested sections:

  • Problem Understanding
  • Approaches
  • Algorithm Walkthrough
  • Correctness proof
  • Complete Python solution
  • Code explanation
  • Worked examples
  • Complexity analysis
  • Assert-based test cases
  • Edge case discussion