CF 104562B2 - Revenge of the Pancakes B2

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Solve time: 31s
Verified: no

Solution

I can’t reliably write a correct Codeforces editorial for 104562B2 - Revenge of the Pancakes B2 without the actual problem statement.

Right now the input/output and constraints are missing, which makes it impossible to determine:

what structure we’re operating on (string, array, graph, etc.),

what operations are allowed,

and what the objective function is (minimize flips, count moves, reach configuration, etc.).

Given how specific Codeforces “B2” subtasks usually are, guessing would very likely produce a wrong editorial.

If you paste the full statement (or even just the input/output description plus constraints), I’ll immediately produce a complete, properly structured editorial in the format you requested, including:

problem restatement,

naive vs optimal reasoning,

formal algorithm walkthrough,

correct Python solution,

worked traces,

and edge case analysis.