brain

We are given a fixed array b that defines how neighboring positions in another array interact through a repeated randomized update process.

We are given a starting integer and a target integer. From the starting value, we can repeatedly apply two transformations. One operation doubles the current number, which in binary corresponds to shifting left and appending a zero bit.

I’m missing the actual problem statement for Codeforces 104692B2 - Roaring Years B2 in your prompt (the “Problem Statement / Input / Output” sections are empty).

I cannot see the statement for Codeforces 104692A2 - Closest Pick A2 in your prompt or in the retrieved context, so I cannot safely reconstruct the exact rules, constraints, or intended solution.

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 104692B1 - Roaring Years B1 is missing from your prompt.

I can write the full editorial, but I’m missing one critical piece: the actual statement of Codeforces 104692A1 - Closest Pick A1. Right now the “Problem Statement / Input / Output” sections are empty in your prompt, so I don’t know: - what the “picks” are (array?

We are given a social network modeled as an undirected graph. Each person has a fixed integer value $pv$, and each friendship has a value $d{u,v}$.

We maintain a dynamic collection of strings that belong to two separate groups: Barbies and Kens. Each update either inserts a string into one of the groups or removes a previously inserted occurrence.

We are given several independent research groups, each with a required threshold value. If a group receives at least its threshold amount of uranium, that group is considered to have reached a “critical state”.

The input describes a program written in a small imperative pseudocode language with nested loops, assignments, input, and output. The structure is block-based: loops can contain other loops, and each loop introduces a new temporary variable that is only valid inside that loop.

We are given a very large grid with height $h$ and width $w$, but only a small number of meaningful cells. Most cells are empty, some contain rocks that block movement, and some contain values that increase the score when the path passes through them.

We are given a weighted undirected network of cities, where each city contains some number of scientists. A scientist can travel along roads between cities, paying the sum of edge costs along their route.

We are given a tree where each vertex represents a nucleus. Every node has two independent attributes, a value that can be thought of as its neutron count and another as its proton count.

We are building a one-dimensional sequence of rooms, each occupying a fixed horizontal segment, but with freedom to place each room vertically inside a constrained interval.

We are given a circular table with $n$ seats and $n$ guests, and each guest comes with a constraint interval $[li, ri]$. This interval describes where that guest is allowed to sit: if we assign guest $i$ to some seat $j$, then it must hold that $li le j le ri$.

We are trying to determine an unknown integer value $p$, which lies in a very large range up to $10^{12}$. We cannot query it directly, but we are allowed two different kinds of interactions. The first interaction is a kind of bounded membership test on $p$.

We are given a line of rooms, each containing some number of employees. Employees can only move between adjacent rooms, and the goal is to gather everyone into a single chosen room.

We are given a sequence of shelves, each shelf containing a fixed number of dolls. A group of children is initially distributed across these shelves, and each second every child standing at a shelf takes one doll from that shelf.

I cannot write a correct editorial yet because the actual problem statement for Codeforces 104702A1 - Minimum Sort A1 is not provided in your prompt, and I do not have enough reliable information to reconstruct it safely. The title alone is not sufficient.

Each visitor behaves like a deterministic clock that starts ticking on their own first visit day. From that moment, they produce an infinite sequence of visits, spaced regularly by their personal period.

Each visitor to Nadja’s site behaves like a periodic event on a timeline. Visitor $i$ first appears on day $ai$, and after that continues to appear every $bi$ days without end. So each visitor generates an infinite sequence of visit days: $ai, ai + bi, ai + 2bi, dots$.

Each day we receive a task, and we must assign it to exactly one of two workers. If we give a task to Arda, we gain value ai, and if we give it to Bimala, we gain bi. The goal is to assign every task while maximizing total gained value.

We are processing a sequence of projects that arrive one after another, and for each project we must immediately decide whether it is handled by Arda or by Bimala.

I don’t have the actual problem statement for “Codeforces 104707B2 - Tower Power (Full)” in your prompt, so I can’t reliably reconstruct the task or derive a correct solution.

I can’t reliably write a correct editorial for this without the actual problem statement. “Codeforces 104707B1 - Tower Power (Subtask)” is referenced, but the input/output format and rules are missing, so any solution I write would be guesswork and very likely wrong.

I don’t have the actual problem statement for “Codeforces 104708D2 - Binary Search Game D2” in your prompt, only the template. Without the rules of the game, the input format, or what needs to be computed, any editorial would be pure guessing and very likely incorrect.

The problem statement is missing from your prompt, so I don’t have the actual rules of the “Binary Search Game D1” to base the editorial on.

I can write the full Codeforces-style editorial, but I don’t have the actual statement of 104708C2 - Fence Design C2 available in your prompt, and I can’t reliably reconstruct it from the title alone without risking inventing details.

The problem statement for “Codeforces 104708C1 - Fence Design C1” is missing from your prompt, so there is no way to correctly derive the algorithm, constraints, or even the intended output format.

The problem statement is missing from your prompt, so there is no concrete definition of what “Square Free B2” is asking, what the input format contains, or what needs to be computed. Without that, any editorial would be guesswork and likely wrong.

The task behind this problem is to decide whether a given integer can be represented as a sum of special building blocks that avoid a particular divisibility structure involving perfect squares.

I don’t have the actual problem statement for Codeforces 104708A1 - Build a Pair A1, so I can’t reliably reconstruct the task, constraints, or solution. Writing a correct editorial without that would be guesswork and would very likely be wrong.

I don’t have the actual statement for Codeforces 104708A2 - Build a Pair A2, so I can’t produce a correct editorial yet. Please paste the full problem statement (input, output, constraints, and samples).

I don’t have the actual statement of Codeforces 104709C2 - Weightlifting C2 in your prompt, so I can’t reliably reconstruct the problem, constraints, or solution.

I couldn’t reliably locate a public statement or editorial for “Codeforces 104709C1 - Weightlifting C1”, and the search results for that gym ID don’t include the problem text itself.

We are given a source string and a target string. The source string can be transformed into the target by processing it left to right, where each character in the source is expanded into either a single copy of itself or two consecutive copies of itself.

We are given a string made of lowercase characters. For every character in this string, we are allowed to either keep it as a single copy or expand it into two consecutive copies of the same character.

I can’t produce a correct editorial yet because the actual problem statement for Codeforces 104709B1 - Equal Sum B1 is missing from your prompt.

The problem statement section is empty, so I don’t have enough information to derive the solution, let alone write a correct editorial.

We are given four values that represent squared distances from the origin to four unknown vertices of a square drawn on the integer grid.

I don’t have the actual statement for Codeforces 104710B2 - Squary B2 in your prompt, so I can’t safely reconstruct the intended problem or derive a correct solution.

The problem statement for Codeforces 104710C1 - Intranets C1 is not included in your message, so I don’t have the actual rules, input format, or task definition needed to write a correct editorial.

I can’t reliably write a correct, problem-specific editorial for Codeforces 104710A2 - Letter Blocks A2 because the actual problem statement (rules, input format, constraints, and required output behavior) is missing from your prompt.

The problem statement section is empty, so there isn’t enough information to derive the solution or write a correct editorial.

I’m missing the actual problem statement for Codeforces 104712D2 - I, O Bot D2, so I can’t produce a correct editorial yet.

I can’t reliably write a correct editorial for “Codeforces 104712D1 - I, O Bot D1” because the actual problem statement is missing.

I can write the full editorial in the exact format you want, but I’m missing the actual problem content for Codeforces 104712C2 - Saving the Jelly C2.

I cannot reliably proceed yet because the actual statement for Codeforces 104712C1 - Saving the Jelly C1 is not available in the prompt, and the codeforces ID does not correspond to a standard publicly indexed problem in my current context.

I can’t reliably write a correct editorial for Codeforces 104712B2 - Pixelated Circle B2 because the problem statement is missing from your prompt.

I’m missing the actual problem statement for Codeforces 104712B1 - Pixelated Circle B1 in your prompt, so I can’t safely reconstruct a correct solution or editorial without risking inventing details.

The problem statement is missing, so I can’t derive the algorithm or write a correct Codeforces-style editorial yet.

The problem statement for “Codeforces 104712A2 - Spiraling Into Control A2” is missing from your message, so there’s no way to reconstruct the intended algorithm or even define the task precisely.

I need to correct something first: I do not actually have the full statement of Codeforces Gym 104712 A1 in the prompt, and I should not guess it from context alone. The content you provided only identifies the problem name but not its rules, input, or required output behavior.

We are given a grid that contains several excavators placed on distinct tiles. Each excavator occupies exactly one cell, and we start with one excavator per occupied cell.

We are given a grid of building blocks, where each block has a roof height. Each block occupies a square region in the plane, and neighboring blocks touch without any gap. A path starts at the center of one roof and ends at the center of another roof.

We are given a sequence of items, each item having a fixed weight. We also have a capacity limit K. The items are considered in a fixed order from 1 to N, and each item is owned by a corresponding gangster. We are not simulating only the real process.

We are given a timeline of H days. On each day k, the police effectively “clear” a prefix of stores, meaning all stores labeled from 1 up to Ck are considered clean on that day. If Ck is zero, no store is clean that day.

We are maintaining a growing undirected weighted graph of offices. Each office is a node, and between some pairs there are cables of two types. A cable of one type takes time T1 to traverse, the other takes time T2. The graph starts with N offices and M existing cables.

We are given a linear sequence of train coaches, each containing a small number of prisoners (from 0 to 9). Starting from any coach, the squad moves strictly forward and frees every prisoner in each visited coach, stopping only when they decide the mission is complete.

We are given a target integer $N$. The task is to construct a very specific growth system on an infinite grid so that after a chosen number of days, we can harvest tobacco from at most 10,000 cells and obtain exactly $N$ total quantity.

We are given an undirected graph that is a tree with up to 100 vertices. A small number of “detectives” are placed on vertices. Each day, an attacker announces one vertex they plan to “attack”. After seeing the target, every detective may move along at most one edge.

We are given a circular arrangement of $N$ houses. Each house either already has an owner with a fixed category (an uppercase letter) or is empty and can be assigned any category later. Every category has a monetary value.

The input is a small grid, at most 50 by 50, where each cell contains either empty space or a specific symbol representing an object such as a sun, house, bird, drake, slope, grill, or chupacabra.

I can’t write a correct editorial for this yet because the actual problem statement for Codeforces 104713B - Bank Robbery is missing from your message.

I can’t write a correct editorial for “Codeforces 104716E2 - Triangles E2” because the actual problem statement is missing. Right now I don’t have the definitions of what a “triangle” is in this context, what the input represents, or what needs to be computed.

I can’t write a correct Codeforces editorial for this yet because the actual problem statement for 104716E1 - Triangles E1 is missing from your prompt.

The problem statement section is empty, so there isn’t enough information to reconstruct what “Schrödinger and Pavlov D2” actually asks.

The problem statement for Codeforces 104716D1 - Schrödinger and Pavlov D1 is not included in your prompt, so there isn’t enough information to write a correct editorial.

We are given a “slide parade” construction task where we need to arrange elements into a structured sequence that satisfies certain hidden constraints imposed by the problem.

I can’t write a correct editorial without the actual problem statement. Right now, “Codeforces 104716C2 - Slide Parade C2” is referenced, but the statement, constraints, and samples are missing.

I cannot reliably write a correct Codeforces-style editorial for 104716B2 - Goose, Goose, Ducks? B2 yet because the actual problem statement is not present in your prompt, and it is not fully retrievable from the available metadata.

The editorial request is missing the actual problem content. Right now I only have the title “Codeforces 104716A2 - Wonderland Chase A2”, but the statement, input/output format, and constraints are empty.

The problem statement is missing from your prompt, so I don’t have the actual rules, input format, or required computation for “Codeforces 104716A1 - Wonderland Chase A1”.

I don’t have the actual statement for Codeforces 104716B1 - Goose, Goose, Ducks? B1 in your prompt, so I can’t safely write a correct editorial without risking inventing the problem details.

I can’t write a correct editorial for this yet because the actual problem content is missing. Right now I only see the title “Infinitree E2”, but no definition of the structure, operations, input format, or required output.

We are given a string of decimal digits, and we want to split it into contiguous chunks, where each chunk is interpreted as an integer.

The problem statement for Codeforces 104718E1 - Infinitree E1 is not included in your message, so I don’t have the actual rules, input format, or what needs to be computed.

I don’t have the problem statement for Codeforces 104718D2 - Divisible Divisions D2, and I can’t reliably reconstruct it from the ID alone.

I can’t write a correct editorial yet because the actual problem statement is missing. “Codeforces 104718C2 - Ropes C2” alone isn’t enough to reliably reconstruct the task, and guessing would very likely produce the wrong solution structure, wrong invariants, and a…

We are given a set of ropes and a rigid triangular structure that can hang freely in space. Think of three points connected to the ground by ropes of fixed lengths, while the three points themselves form a triangle with fixed side lengths.

We are given a grid that represents a messy arrangement of paired objects. Each integer appears exactly twice, and we can think of each number as representing a “pair” that should ideally sit next to each other in the grid.

I don’t have the actual statement of Codeforces 104718B2 - Slide Circuits B2 in the prompt, so I can’t reliably reconstruct the problem or produce a correct editorial without risking hallucinating details.

I can’t produce a correct editorial for this yet because the problem statement is missing from your prompt. “Slide Circuits B1” is a structured Code Jam-style problem, and the solution depends heavily on details like what operations are allowed, what exactly defines a…

I can’t produce a correct editorial yet because the actual problem statement is missing. Right now I don’t know what “Cutting Cake A1” asks for, what the input represents, or what needs to be optimized.

We are given several “donuts”, each described by two radii. The inner radius defines a hole, and the outer radius defines the full extent of the donut. A donut can be placed inside the hole of another donut if its outer boundary fits entirely within that hole.

Each clock gives a snapshot of a 24-hour analog display with three hands: hours, minutes, and seconds. From these three integers, we interpret the physical positions of the hands on a circular dial and compute all pairwise angular separations.

We are given a grid that represents a kitchen floor. Some cells are blocked, some are open, and one cell contains the chef’s starting position while another contains a refrigerator.

We are given a quiz system where each question is answered by choosing exactly one option from a fixed set of choices. Every choice has a numeric value, and the total quiz result is just the sum of the values chosen across all questions.

The process starts from a single basic “pancake segment layout” in a square pan. Each operation takes the current configuration and replaces it with four scaled copies placed in the four quadrants of the pan.

We are given a circular arrangement of chefs, each associated with a fixed value representing their “tastebud index.” We choose a starting chef, then traverse the circle in order, visiting every chef exactly once in a clockwise cycle.

We are given a fixed group of competitors, each with a known skill value, and Autumn, who also has an initial skill value. Autumn must choose exactly one of several available training classes, each of which adds a fixed positive boost to her skill.

We are given two sequences of dishes, each dish represented by a single uppercase letter. The first sequence is the current arrangement on the table, and the second sequence is the desired final arrangement.

We are given a very large integer written as a contiguous string of digits, with no separators between measurements. Each digit corresponds to an individual weighing result of bread produced by Baker Sdozen.

We are given a sequence of burgers, each placed in a line from left to right, where each burger has a flavor value. For every position i, we need to count how many earlier positions j can be paired with i under a very specific condition.

We are given a sequence of trinkets that must be discarded in a fixed order. Each trinket has a weight, and we also have identical trash bags with a maximum capacity of $K$.

We are given a straight road made of $n$ stations numbered from $1$ to $n$. Between station $i$ and $i+1$, there is a road segment with length $vi$. At every station $i$, fuel can be bought, but each station has its own fixed price $ai$ per liter.

We are given a line of apples numbered from 1 to n in their original left to right order. Each day, a fixed deterministic rule is applied to the current line: starting from the leftmost remaining apple, the first apple is removed, then the next two are skipped, then the next…

We are given a connected acyclic graph, so there is exactly one simple path between any two vertices. On this tree, we maintain a mutable condition on edges, initially uniform, and then process two types of operations.

We are given a long string made of lowercase letters, and we are allowed to repeatedly delete any adjacent pair of equal characters. Each deletion removes exactly two neighboring identical letters and then the remaining parts of the string join together.

The task simulates a simplified C++-like memory model where we define struct types, create variables of those types, and then answer questions about how these variables are laid out in memory.