CF 1042904 - Ультра mex

I’m missing the actual problem statement for Codeforces 1042904 - “Ультра mex”. Right now only the title is provided, but the editorial you’re asking for depends completely on the formal rules of the task (what the input is, what operations are allowed, what…

codeforcescompetitive-programming

CF 1042904 - \u0423\u043b\u044c\u0442\u0440\u0430 mex

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Solve time: 26s
Verified: no

Solution

I’m missing the actual problem statement for Codeforces 1042904 - “Ультра mex”.

Right now only the title is provided, but the editorial you’re asking for depends completely on the formal rules of the task (what the input is, what operations are allowed, what “ultra mex” means in this context, constraints, etc.). Without that, any attempt to write a full solution would be guessing, and that would produce a meaningless or incorrect editorial.

Please paste the full problem statement (or at least input/output format + constraints + definition of the task), and I’ll produce the complete Codeforces-style editorial exactly in the format you specified.