CF 105424E - Маска для монстров

I don’t have the statement of Codeforces 105424E (“Маска для монстров”) available in this context, and I can’t reliably reconstruct the problem from the title alone without risking inventing details.

codeforcescompetitive-programming

CF 105424E - \u041c\u0430\u0441\u043a\u0430 \u0434\u043b\u044f \u043c\u043e\u043d\u0441\u0442\u0440\u043e\u0432

Rating: -
Tags: -
Solve time: 21s
Verified: no

Solution

I don’t have the statement of Codeforces 105424E (“Маска для монстров”) available in this context, and I can’t reliably reconstruct the problem from the title alone without risking inventing details.

To write a correct editorial in the format you requested, I need at least one of the following:

  • full problem statement, or
  • a link + pasted text, or
  • input/output description and constraints.

Once you provide that, I’ll produce a complete Codeforces-style editorial with the structure you specified (problem understanding, approaches, walkthrough, proof, code, examples, tests, and edge cases).