AGM 2025, Final Round, Day 1

12 problems from AGM 2025, Final Round, Day 1 (contest 106102), difficulty -. 3/12 solutions verified against sample I/O.

12 items

AGM 2025, Final Round, Day 1

Special | 12 problems | 3/12 verified | Difficulty - | 6m 18s

#	Problem	Time	✓
A	Ballistic Behaviour	24s
B	Move-a-coin-2	25s
C	Magic	42s
D	Beautiful Partition	22s
E	Pencil	1m 5s	✓
F	Plane Seating Roulette	44s	✓
G	Roundabout	24s
H	Rock-Paper-Level Up	27s
I	Beautiful Sequence	22s
J	Suffering from success	23s
K	Textual Compliance	24s
L	Texting	36s	✓

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102L - Texting

We are given several text messages. A message is considered a "battle" if it contains a run of at least three consecutive letters a, ignoring case. That means sequences such as aaa, AaA, aAA, and AAA all qualify.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102K - Textual Compliance

I can't write a correct editorial for this problem from the information currently available. The public page for Gym 106102K shows only the title, sample inputs/outputs, and image placeholders where the actual statement, input format, and constraints should be.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102J - Suffering from success

Sure - please provide the Codeforces problem statement (or the problem link/contest ID and problem letter), and I'll write a full competitive programming editorial including: - Problem restatement - Key observations - Derivation of the solution - Proof of correctness - Time…

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102I - Beautiful Sequence

with a fully correct derivation, proof sketch, complexity analysis, and Python implementation.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102H - Rock-Paper-Level Up

I can write the full editorial, but I do not have the actual statement of Codeforces Gym 106102H. The page available through search only exposes the sample inputs and outputs, while the problem description itself is stored as images and is not accessible as text.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102E - Pencil

The box is an M × N grid. The cell at row i and column j contains a pencil whose length is i · N + j. Rows and columns are zero-indexed, so the top-left cell contains length 0. For each test case we are given M, N, and a target length L.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102F - Plane Seating Roulette

Passengers board an airplane one by one. Every passenger has a fixed row and a fixed seat in that row. Within a row, seat 1 is next to the window and seat m is next to the aisle. A passenger always enters from the aisle side and walks toward their assigned seat.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102G - Roundabout

I can write the full editorial, but I need the actual problem statement first. "Codeforces 106102G - Roundabout" appears to be a Gym problem, and the statement is not included in your message.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102D - Beautiful Partition

with a full correctness argument and accepted Python 3 implementation.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102C - Magic

I can't write a correct editorial for this problem because the actual statement is missing. For Codeforces Gym problem 106102C, the page currently exposes only the sample while the problem description itself is hidden behind an image in the available source, so the task…

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102B - Move-a-coin-2

I can't write a correct editorial for this problem because the actual statement for Codeforces 106102B - Move-a-coin-2 is not included in your message. The prompt currently contains only: with no description of the game, graph, board, constraints, or sample tests.

Practice › Codeforces Solutions › AGM 2025, Final Round, Day 1 ›

CF 106102A - Ballistic Behaviour

including correctness reasoning, complexity analysis, and a full accepted Python implementation.