MITIT Winter 2025 Beginner Round

9 problems from MITIT Winter 2025 Beginner Round (contest 105668), difficulty -. 8/9 solutions verified against sample I/O.

9 items

MITIT Winter 2025 Beginner Round

Special | 9 problems | 8/9 verified | Difficulty - | 6m 52s

# Problem Rating Tags Accepted Time ✓
A MIT Time 49s ✓
B M(IT)+ 43s ✓
C Traveling Salesman Problem 46s ✓
D Scoreboard Screenshots 47s ✓
E Missing Number Queries 47s ✓
F AAB \u2194 BAA 30s
G Grid and Numbers Game 54s ✓
H Toy Marbles 50s ✓
I Snakes on a Grid 46s ✓
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668F - AAB ↔ BAA

The problem statement is missing from your message, so I don’t have the actual task definition (what operations are allowed, what needs to be computed, constraints, etc.). Without that, I can’t write a correct editorial without risking inventing details.
codeforces competitive-programming Jun 25, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668H - Toy Marbles

We are given a collection of containers, each initially holding a marble that is labeled by a target container index. Every container has exactly one marble at the start, but marbles are not necessarily in the correct place.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668I - Snakes on a Grid

We are working on a rectangular grid where each cell is either empty or belongs to a connected structure. The grid is fixed, and for each query we are given a sub-rectangle.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668G - Grid and Numbers Game

We are given a grid of integers. A move in the game repeatedly modifies the grid until no move is possible anymore. The key structural property is that while values may change through the game, the relative ordering between cells never changes.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668E - Missing Number Queries

We are given an array that is being updated over time, and we must answer queries about what value can safely be used from a subarray under a specific rule involving “missing” numbers.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668D - Scoreboard Screenshots

We are given several screenshots of a scoreboard, where each screenshot records the scores of the same set of teams at some moment in time. Each screenshot is an array of length $K$, and the $i$-th value represents the score of team $i$ at that moment.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668A - MIT Time

We are given a single integer, and we must classify it into a very small set of time labels that depend on which range the number falls into.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668C - Traveling Salesman Problem

We are given a set of points on a 2D plane. Each point represents a “city”, and the task is to compute the length of the shortest possible route that starts at some city, visits every city exactly once, and returns to the starting city.
codeforces competitive-programming Jun 22, 2026
Practice › Codeforces Solutions › MITIT Winter 2025 Beginner Round ›

CF 105668B - M(IT)+

We are given a string that is built from two kinds of characters, where one of them acts like a structural marker and the other forms a repeating pattern.
codeforces competitive-programming Jun 22, 2026