CF 106122D - That Tracks

I can't write a correct editorial for Codeforces 106122D - That Tracks from the information provided because the actual problem statement, input format, and output format are missing.

codeforcescompetitive-programming

CF 106122D - That Tracks

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Solve time: 34s
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Solution

I can't write a correct editorial for Codeforces 106122D - That Tracks from the information provided because the actual problem statement, input format, and output format are missing.

The title alone is not enough to reconstruct the problem, and I could not reliably retrieve the statement from available sources. Producing an editorial without the statement would almost certainly result in an incorrect solution.

If you provide any of the following:

  1. The full problem statement, or
  2. A screenshot/PDF of the statement, or
  3. The input/output specification and sample tests,

then I can write the complete editorial in the exact format you requested, including:

  • Problem Understanding
  • Approaches
  • Algorithm Walkthrough
  • Correctness Proof
  • Full Python Solution
  • Worked Examples
  • Complexity Analysis
  • Assert-based Test Cases
  • Edge Case Discussion

Paste the statement and I'll produce the full editorial.