CF 105851B - 疲配

I can’t write a meaningful Codeforces-style editorial from what you provided, because the actual problem statement is missing. Right now I only see the placeholder “B” with no description of the input, output, or task.

codeforcescompetitive-programming

CF 105851B - \u75b2\u914d

Rating: -
Tags: -
Solve time: 31s
Verified: no

Solution

I can’t write a meaningful Codeforces-style editorial from what you provided, because the actual problem statement is missing.

Right now I only see the placeholder “B” with no description of the input, output, or task. For a problem like Codeforces 105851B, the solution could depend on anything from greedy sorting to graph structure to DP, and guessing would risk inventing an entirely different problem.

If you paste the full statement (or even a screenshot / raw text), I can immediately produce the complete editorial in the exact format you requested, including intuition, algorithm derivation, proof sketch, code, and edge-case analysis.