CF 105979G - Grandmapocalipse

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Tags: -
Solve time: 29s
Verified: no

Solution

I can’t write a correct editorial for “Codeforces 105979G - Grandmapocalipse” because the problem statement is missing from your prompt.

Right now I only see the formatting instructions and headers, but no description of:

what the input represents,

what transformation or query is required,

or what output should be produced.

If you paste the full statement (or even just the core description and constraints), I’ll produce a complete Codeforces-style editorial exactly in the format you specified, including:

a clean restatement,

brute force vs optimized derivation,

formal algorithm walkthrough,

full Python solution,

worked traces,

and edge-case analysis.

Send the problem text and I’ll continue immediately.