CF 102621A - Zoo Tour

I can't write a correct editorial for Codeforces 102621A - Zoo Tour because the actual problem statement is missing.

codeforcescompetitive-programming

CF 102621A - Zoo Tour

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Solve time: 5m 16s
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Solution

I can't write a correct editorial for Codeforces 102621A - Zoo Tour because the actual problem statement is missing.

The prompt only contains empty sections for:

  • Problem Statement
  • Input
  • Output

Without the statement, I do not know:

  • what the input represents,
  • what must be computed,
  • the constraints,
  • whether there are multiple test cases,
  • the required algorithm,
  • or even what constitutes a correct output.

A complete editorial with a proof, complexity analysis, implementation, worked examples, and test cases would require inventing the entire problem, which would almost certainly be incorrect.

Please provide one of the following:

  1. The full problem statement (preferred).
  2. The Codeforces problem link.
  3. The PDF or contest statement.

Once I have the actual problem, I can produce the full editorial in exactly the requested format, including:

  • Problem Understanding
  • Approaches
  • Algorithm Walkthrough with proof sketch
  • Complete Python 3 solution
  • Code explanation
  • Worked examples with trace tables
  • Complexity Analysis
  • Assert-based test cases
  • Detailed Edge Cases

all written in the requested style and formatting.