brain

The editorial can’t be written yet because the actual problem statement (rules, input/output format, constraints) is missing.

The problem statement is missing, so I don’t have the actual definition of what “Binary Tree” (CF 105484G) is asking for.

The problem statement is missing from your prompt, so I don’t actually know what “Codeforces 105484E - Left Shifting 3” is asking for.

The problem statement is missing from your prompt, so there is no way to reconstruct the intended task, constraints, or required algorithm.

The editorial can’t be written yet because the actual problem content is missing. Right now there is no description of what “Toe-Tac-Tics” is asking for, so there is nothing concrete to reason about, no structure to restate, and no algorithmic path to derive.

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 105484A - “Hey, Have You Seen My Kangaroo?” is missing from your prompt.

I can’t write a correct editorial for “Codeforces 105484C - Topology” because the actual problem statement is missing from your prompt. Right now I don’t know: what the input describes, what “topology” refers to in this context (graph orientation, sorting, DP, etc.

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.

The problem statement for Codeforces 105488D is not included in your message, so there is no way to reconstruct the algorithm, constraints, or required output reliably.

I can’t reliably write a correct editorial for “Codeforces 105488B - Интерактивные переходы” from the title alone.

The problem statement is missing from your message (the “Input / Output” sections are empty). Without the actual description of what the lawnmowers are supposed to do, there is no way to reconstruct the intended algorithm or produce a correct Codeforces-style editorial.

The problem statement for “Codeforces 105488C - Гонка дронов” is missing from your message, so there is no way to reconstruct the task, constraints, or required output behavior.

I can’t write a correct editorial without the actual problem statement. Right now the “Problem Statement / Input / Output” sections are empty, so there’s no way to reconstruct the task, constraints, or required solution technique.

The problem statement is missing from your prompt, so I don’t have enough information to write a correct Codeforces-style editorial.

I can’t write a correct editorial for this yet because the actual problem statement is missing. “Codeforces 105490I - Musaigen no Phantom World” alone isn’t enough to reconstruct the task reliably, and guessing would lead to a completely wrong solution write-up.

The problem statement for Codeforces 105490H - “Пазл” is missing from your message, so there’s no way to reconstruct the intended task, constraints, or required solution strategy.

The problem statement for “Codeforces 105490G - Разработчик задач из Сбера” is not included in your message, so there is no way to reconstruct the task, constraints, or required algorithm correctly.

The problem statement is not included in your prompt, so I don’t have the actual task description, constraints, or input/output behavior for 105490F - Горилла и леопардик.

The problem statement is missing, so there is no way to reconstruct a correct editorial yet. Codeforces solutions are extremely sensitive to the exact definition of the input, what “stars” means in this context, and what is being counted or optimized.

The photo album is a grid with n rows and m columns, where each cell contains either a forbidden picture or a normal picture.

The problem statement for “Codeforces 105490D - Очередная сортировка перестановки” is missing from your message, so there is no way to reconstruct the intended solution reliably.

We are given a rooted tree for each test case. Every node has exactly one parent except the root, and the parent pointers define the entire structure. From this tree we consider all non-empty subsets of nodes.

I can’t reliably write a correct editorial for this without the actual problem statement. Codeforces IDs alone aren’t enough here because “105490A - Логотип VK” doesn’t uniquely specify the task details (and guessing would risk producing a completely wrong…

I don’t have the actual statement of Codeforces 105491G - If Sort is Life in your prompt, so I can’t correctly derive the algorithm, edge cases, or write a meaningful editorial without risking inventing the problem.

We are given an array of integers. The important hidden structure is that we are allowed to freely rearrange elements, but only in a constrained way: we can pick any two positions and swap their values.

I can’t reliably write an editorial for “Codeforces 105491F - Permutation via Tree” without the actual problem statement. Right now I don’t have enough information about what the tree represents, what constraints define the permutation, or what the required output is.

I cannot reliably identify a Codeforces problem from the identifier “105491E - Any Tree ?”. The statement is not available in standard CF archives or mirrored listings, and it does not match a known public problem format.

I don’t have the actual problem statement for Codeforces 105491B - K Palindrome, so I can’t safely reconstruct the editorial without risking inventing details that might be wrong. Please paste the full statement (or even just the input/output description and constraints).

The problem statement is missing from your prompt, so there is no way to reliably reconstruct what Codeforces 105491C - Pair of GCD is asking, and any attempt to write a full editorial would be guessing.

The problem statement for Codeforces 105491A - Niimmm is not included in your prompt, so there is no way to reconstruct the actual task, constraints, or required algorithm.

We are given two integers, where one represents a total sum that must be achieved and the other fixes how many positive integers must be chosen. Think of constructing a multiset of size $k$, where each element is a positive integer pitch.

The prompt is missing the actual problem statement for “Codeforces 105500I - Cyclic Melody”, and the Input/Output sections are empty.

I don’t have the actual statement for Codeforces 105500H - osu!mania in your prompt, and I can’t reliably reconstruct it from the title alone without risking inventing details.

I can’t write a correct editorial for that problem yet because the actual problem statement is missing. “Codeforces 105500F - Burt (Hard Version)” isn’t included in your message, so I don’t know what the input represents, what is being optimized or computed, or what…

I can’t write a correct editorial for Codeforces 105500G without the actual problem statement. Right now, there’s no information about what “Piano Concerto” is asking for, so any solution I produce would be a guess and would very likely be wrong (and that would defeat…

The problem statement is missing from your prompt, so there is no way to correctly reconstruct the intended task or derive an algorithm for “Codeforces 105500D - Burt (Easy Version)”.

I don’t have the problem statement for Codeforces 105500C “How Many Keys?” available in your prompt, and I can’t reliably reconstruct it from the title alone without risking inventing details.

I can’t write a correct editorial for this yet because the actual problem statement for “Codeforces 105500E - Piano Pirates” is missing from your prompt.

I’m missing the actual problem content for Codeforces 105501H - osu!mania (the statement, constraints, and what is being asked are not included in your prompt).

I can’t produce a correct editorial for Codeforces 105501G - Piano Concerto without the actual problem statement. Right now the prompt only contains metadata (title, rating, tags) but no description of the task, input/output format, or constraints.

The problem statement for Codeforces 105501F - Burt (Hard Version) is missing from your prompt, so there is no way to reliably reconstruct the solution, constraints, or even the task definition.

I can’t reliably write a correct editorial for Codeforces 105501E - Piano Pirates because the actual problem statement is missing from your prompt.

The problem statement for “Codeforces 105501D - Burt (Easy Version)” is missing from your prompt, so I don’t have the actual rules, input format, or task definition needed to write a correct editorial.

The problem statement for Codeforces 105501A - Gyro Spyro is missing from your prompt, so I don’t have enough information to write a correct editorial.

The problem reference you provided, “Codeforces 105501B - Black and White,” does not appear to exist as a standard indexed Codeforces problem with an accessible statement under that ID.

I can’t reliably write a correct editorial for this without the actual problem statement. “Codeforces 105501C - How Many Keys?

The problem statement for “Codeforces 105512D - Последнее испытание” is not included in your message, so there’s no way to reconstruct the required input/output model or derive an algorithm correctly.

We are given a binary string, and we are allowed to repeatedly apply an operation that reverses a chosen substring. The key restriction is that the substring we choose must contain exactly $k$ ones at the moment we apply the operation.

I can’t complete this editorial correctly yet because the actual statement of Codeforces 105512A - “Производство автомобилей” is missing, and the name alone is not enough to reconstruct the task reliably.

I’m missing the actual problem statement for Codeforces 105512C - “Балет” (the section is empty in your prompt), so I can’t reliably reconstruct the task or derive a correct solution.

I can’t reliably write a correct editorial yet because the actual statement of Codeforces 105513D - “Мега OR” is missing from your prompt, and it is not recoverable from the available context.

I can’t reliably reconstruct Codeforces 105513C (“Ресторанный бизнес”) from the identifier alone, and without the actual statement any editorial would risk inventing rules, which would defeat the purpose of a correct solution write-up.

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 105513B - “История о ферматисте” is missing from your prompt.

I’m missing the actual problem statement for Codeforces 105513A (“Поддержание бодрости”), so I can’t responsibly write a correct editorial yet.

I don’t have the actual statement for Codeforces 105514D “Системы счисления” in your prompt, so I can’t reconstruct the problem reliably or write a correct editorial without risking hallucination.

I’m missing the actual problem statement for Codeforces 105514C - “Тортики и свечки”, so I can’t safely derive the solution or write a correct editorial yet.

I can’t reliably reconstruct Codeforces 105514A (“Доски”) from available references, and I don’t want to hallucinate a solution for a problem whose statement is missing or ambiguous. The editorial would be meaningless if the underlying task is wrong.

I’m missing the actual problem statement for Codeforces 105514B (“Счастливые числа”), and without it I can’t reliably reconstruct the task, constraints, or the intended solution path.

I can’t write a correct Codeforces-style editorial for this yet because the actual problem statement is missing.

The problem statement is missing from your prompt, so there’s no way to reconstruct the intended solution, constraints, or even the core task for Codeforces 105515B.

The editorial request cannot be completed as written because the actual problem statement for Codeforces 105515C - “Эффективные ветрогенераторы” is missing from the prompt.

The problem statement is missing from your prompt, so I don’t have the actual task definition for Codeforces 105515A.

I don’t have the actual statement for Codeforces 1055164 - “Оптимальные тарифы” in your prompt, so I can’t reliably reconstruct the problem or produce a correct editorial.

I can’t write a correct editorial yet because the actual problem statement is missing. Right now I only see the title (“Башня из кубиков”), but no description of: - what the input represents, - what operations or constraints exist, - what must be computed.

I don’t have the actual statement of “Кодовый замок” (Codeforces 1055161) in your prompt, so I can’t reliably reconstruct the problem, constraints, or examples needed to write a correct editorial.

I’m missing the actual problem statement for Codeforces 1055163 - “Высокие горы”, so I can’t reliably reconstruct the task or derive a correct solution.

I’m missing the actual problem statement for “Квадратный торт” (Codeforces 1055174), so I can’t reliably reconstruct the logic or write a correct editorial without guessing.

The problem statement is missing from your prompt, so there is no way to reconstruct what “Блокчейн (Blockchain)” is asking for or derive a correct algorithm. A Codeforces editorial depends entirely on the exact operations, constraints, and output rules.

The problem statement is missing from your prompt, so I don’t have enough information to write a correct editorial.

The problem statement section is empty, so there’s no information about what “Поход в магазин” actually asks. Right now I don’t know: what the input represents, what needs to be computed, or what constraints we are working under.

The problem statement is missing, so there’s nothing concrete to derive a correct algorithm from. Right now I only see the title “Переезд в Долгопрудный”, but no description of the task, inputs, or outputs.

The problem statement is not included in your message, so I don’t have the definition of the input format, output requirements, or even what exactly “Площадь прямоугольника” refers to in this specific task instance.

The problem statement is missing from your prompt, so there isn’t enough information to reconstruct the task reliably.

I can’t reliably write a correct Codeforces-style editorial for “1055183 - Нейросеть” without the actual problem statement.

The problem statement for “Codeforces 1055194 - Виртуоз гитары” is not included in your message, so I don’t have the actual task definition, constraints, or input/output format needed to write a correct editorial.

The problem statement for “Codeforces 1055191 - Лифты (Elevators)” is not included in your prompt, so there isn’t enough information to reconstruct the task reliably.

The problem statement is missing from your prompt, so I can’t reliably reconstruct what “Codeforces 1055192 - Торговля” is asking.

I can’t reliably write a correct Codeforces-style editorial here because the actual problem statement is missing.

I can’t reliably produce an editorial for Codeforces 105520D - “Тетрадка” because the actual problem statement is missing from your prompt, and it is not included in the standard archive context I can access here.

I can’t write a correct editorial for this yet because the actual problem statement is missing. Right now you only provided the title (“Хоровод”), but there is no description of: what the input represents, what transformations or operations are allowed, or what…

The problem statement is missing from your prompt, so I can’t reliably reconstruct the task or produce a correct editorial. Please paste the full statement (input/output description and constraints if available).

The problem statement is not included in your prompt (the sections for input/output are empty). Without the actual description of Codeforces 105520B - “Телефон”, it is impossible to produce a correct editorial, because the entire solution structure depends on what is…

I can’t reliably write a correct editorial without the actual problem statement for Codeforces 105521D - “Шоу с дельфинами”.

I can’t write the editorial yet because the actual problem statement for Codeforces 105521A - “Новые книги” is not available in your prompt, and it is not reliably retrievable from the context I currently have.

The problem statement is missing from your prompt, so I don’t have the actual task definition (what “Мыт на реке Яуза” is asking to compute, what the inputs are, or what needs to be output).

I can’t write a correct editorial yet because the actual problem statement is missing. “Codeforces 105521C - Поиск сокровищ” only gives the title, but there’s no information about the input format, constraints, or what the algorithm is supposed to compute.

The problem statement isn’t included in your message, so I don’t have enough information to write a correct editorial for Codeforces 105522D.

The problem statement is missing from the prompt, so I don’t have the actual rules, input format, or what is being asked for in Codeforces 105522B “Монетки”.

I can’t reliably write a correct editorial for Codeforces 105522C “Пирамида” from just the contest ID and name.

The problem statement for Codeforces 105522A - Игрушечный небоскрёб is missing from your prompt, so I don’t have the actual task definition (input format, output requirements, or constraints).

I cannot locate a reliable statement for Codeforces 105523D - “Доски” in the accessible archive data, and the mirror pages do not contain a consistent problem description. Without the actual task statement, any editorial would risk being about the wrong problem.

The problem statement section is empty, so there isn’t enough information to write a correct editorial yet. For a Codeforces editorial, the exact task definition is essential because the solution approach, constraints, and edge cases all depend on what…

The problem statement is missing from your prompt, so there’s no way to correctly derive the solution, constraints, or examples for “Codeforces 105523B - Марсоход Феникс”.

I can’t reliably write a correct editorial for Codeforces 105523C - “Гипотеза Коллатца” because the actual problem statement (what is being computed, constraints, input/output format) is missing from your prompt.

The problem statement didn’t come through, so there’s no way to reconstruct the task reliably. Codeforces problems can vary wildly under the same format, and “105524D - Паутина” alone isn’t enough to determine whether this is a graph problem, combinatorics…

We are given a scenario involving two halves of a collection of bags, where each bag contains a large number of coins. From each bag, a structured sample is taken: from the first bag we take 1 coin, from the second 2 coins, and so on.

The problem statement is missing from your prompt, so there’s no way to reconstruct the task, constraints, or required algorithm safely.

The problem statement section is empty, so there isn’t enough information to reconstruct what “Codeforces 105524C - Предприниматель Дмитрий” is actually asking.

The problem statement for “Codeforces 1055254 - Вредоносные подстроки” is missing from your message, so I don’t have the actual task definition, input format, or required output.

The problem statement is missing from the prompt, so there is not enough information to write a correct editorial.