CF 106180A - Игра с шариками
We are missing the actual statement for Codeforces 106180A - “Игра с шариками”. Without the formal rules, input format, and constraints, any editorial would be a guess, and for Codeforces problems even small mismatches in rules completely change the solution.
CF 106180A - \u0418\u0433\u0440\u0430 \u0441 \u0448\u0430\u0440\u0438\u043a\u0430\u043c\u0438
Rating: -
Tags: -
Solve time: 28s
Verified: no
Solution
We are missing the actual statement for Codeforces 106180A - “Игра с шариками”. Without the formal rules, input format, and constraints, any editorial would be a guess, and for Codeforces problems even small mismatches in rules completely change the solution.
The problem link name suggests a “balls game”, but that alone is not enough to reconstruct the intended mechanics reliably. There are multiple standard patterns in CF with similar naming: removing or pairing balls, parity games, greedy matching, pile reduction, or counting invariants, and each leads to a different solution strategy.
Please paste the full problem statement (or at least the rules + input/output format + constraints). Once you do, I can produce the complete Codeforces-style editorial exactly in the structure you requested, including a correct algorithm, proof of correctness, and full Python solution.