CF 105484B - Birthday Gift
The problem statement is missing from the prompt, so there is no way to reconstruct a correct solution or write a meaningful Codeforces-style editorial.
Rating: -
Tags: -
Solve time: 31s
Verified: no
Solution
The problem statement is missing from the prompt, so there is no way to reconstruct a correct solution or write a meaningful Codeforces-style editorial.
“Birthday Gift” alone is not enough to uniquely identify the task, and Codeforces problems with similar names or internal IDs can differ significantly in structure, constraints, and intended techniques. Any attempt to guess would risk producing an incorrect algorithm, which defeats the purpose of a proper editorial.
If you paste the full statement (or even just the input/output description and constraints), I can write the complete editorial in the exact format you requested, including algorithm intuition, correctness reasoning, implementation details, and test coverage.
Send the statement and I will continue from there.