CF 105981G - Portal 2
I can’t reliably write a correct Codeforces-style editorial from this because the actual problem statement for 105981G - Portal 2 isn’t included (it only shows “G”).
Rating: -
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Solve time: 37s
Verified: no
Solution
I can’t reliably write a correct Codeforces-style editorial from this because the actual problem statement for 105981G - Portal 2 isn’t included (it only shows “G”).
Right now there’s no way to know what the graph/array mechanics, constraints, or required output are, so any solution I write would be a guess and very likely wrong.
If you paste the full statement (or even a screenshot / paraphrased description of inputs, outputs, and rules), I’ll produce the complete editorial in the exact format you requested, including intuition, derivation, proof sketch, code, and edge-case handling.