CF 105767E - GCD and LCM in Perfect Sync

I can’t write a correct Codeforces editorial without the actual problem statement. Right now the “Problem Statement / Input / Output” sections are empty, so there’s no way to reconstruct: - what objects are being manipulated - what “GCD and LCM in perfect sync”…

codeforcescompetitive-programming

CF 105767E - GCD and LCM in Perfect Sync

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Solution

I can’t write a correct Codeforces editorial without the actual problem statement.

Right now the “Problem Statement / Input / Output” sections are empty, so there’s no way to reconstruct:

  • what objects are being manipulated
  • what “GCD and LCM in perfect sync” actually means operationally
  • constraints (which determine whether it’s math, number theory, or data structure)
  • edge cases and required transformations

Please paste the full problem statement (or even just the core description + constraints + samples). Once you do, I’ll produce a complete, structured editorial in the exact format you specified, including derivation, optimal solution, walkthrough, proofs, code, and tests.