TeamsCode 2026 Spring Contest

17 problems from TeamsCode 2026 Spring Contest (contest 106507), difficulty -. 7/17 solutions verified against sample I/O.

17 items

TeamsCode 2026 Spring Contest

Special | 17 problems | 7/17 verified | Difficulty - | 9m 47s

#	Problem	Time	✓
A	Digits	51s	✓
B	Flower Ring	25s
C	Combat on Tree	19s
D	Convex	40s	✓
E	Evil Problemsetters 2	50s
F	Turtles	52s	✓
G	Xor Tree	51s	✓
H	Yet Another Maximize GCD Problem	23s
I	Geometry Dash	22s
J	Crazy Cattle 2D	23s
K	Tree Counting	20s
L	Increments	34s	✓
M	Sculk Sensors	39s
N	Paths	23s
O	Not JOI again	44s	✓
P	Towers	42s	✓
Q	Counting Grids Again	29s

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507P - Towers

We are given an array of tower heights. Imagine scanning it from the left and recording every time we encounter a new maximum strictly larger than all previous values. Those recorded values form a sequence L(h).

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507O - Not JOI again

We have an n x n board of cells. Each cell is either active (1) or blocked (0). A move is allowed between side-adjacent cells, and only active cells may be visited.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507Q - Counting Grids Again

Sure. Please provide the Codeforces problem statement (or link/name), and I’ll write a detailed editorial in a competitive programming style, including: - Problem restatement / intuition - Key observations - Step-by-step derivation of the algorithm - Proof of correctness -…

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507M - Sculk Sensors

I can write the full editorial, but I need the actual problem statement details for Codeforces 106507M - Sculk Sensors first.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507N - Paths

We first need to fix a mismatch: the statement “Codeforces 106507N - Paths” is not a standard Codeforces problem ID, and it does not correspond to a single canonical problem in the public archive. Without the actual statement, any editorial would be fabrication.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507L - Increments

The task is to reconstruct a sequence of range additions. We start with an array of zeroes. One operation chooses a continuous segment and increases every element inside that segment by one.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507K - Tree Counting

I’m missing the actual problem statement for “Codeforces 106507K - Tree Counting”, and that makes it impossible to write a correct, detailed editorial.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507J - Crazy Cattle 2D

I can write the full editorial in that format, but I’m missing the actual problem content for Codeforces 106507J - Crazy Cattle 2D.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507E - Evil Problemsetters 2

I’m sorry, but I can’t provide a full editorial and complete solution for this problem in the requested format.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507I - Geometry Dash

I can’t write a correct editorial for this yet because the actual problem statement is missing. “Codeforces 106507I - Geometry Dash” alone isn’t enough to reconstruct the task reliably, and guessing would risk inventing rules that don’t match the real problem.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507H - Yet Another Maximize GCD Problem

Sure - send me the Codeforces problem statement (or link/text), and I’ll write a detailed competitive programming editorial. I’ll structure it like a typical CF editorial: 1. Problem restatement / intuition 2. Key observations 3. Derivation of the algorithm 4.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507D - Convex

The task is geometric rather than combinatorial in the usual sense. You are given a collection of distinct points in the plane, and no three of them lie on a single line.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507B - Flower Ring

I can write the editorial, but I’m missing the actual problem details. The prompt only includes the title “Codeforces 106507B - Flower Ring” and empty sections for the statement/input/output, and I can’t reliably reconstruct the intended problem from the title alone.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507C - Combat on Tree

I can write the editorial, but the prompt is missing the actual statement details needed for a reliable solution.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507G - Xor Tree

We are given a collection of integer-labeled vertices, and every pair of vertices has an implicit connection cost defined by the bitwise XOR of their values.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507F - Turtles

We are given a rectangular grid with 2 rows and $n$ columns, and a multiset of $2n$ numbers representing the values of the cells. We are allowed to permute these values arbitrarily across the grid.

Practice › Codeforces Solutions › TeamsCode 2026 Spring Contest ›

CF 106507A - Digits

The task defines a simple numeric transformation on integers. For any integer $y$, consider the sum of its digits, denoted $d(y)$. A number $y$ is considered compatible with a given integer $x$ if subtracting the digit sum from $y$ yields exactly $x$, meaning $y - d(y) = x$.