MITIT Spring 2025 Qualification Round 2

5 problems from MITIT Spring 2025 Qualification Round 2 (contest 105837), difficulty -. 4/5 solutions verified against sample I/O.

5 items

MITIT Spring 2025 Qualification Round 2

Special | 5 problems | 4/5 verified | Difficulty - | 4m 8s

#	Problem	Time	✓
A	Balls and Bins	1m 1s	✓
B	Median of Medians	48s	✓
C	Busy Beaver's Colorful Walk	34s
D	Indivisible Inversions	56s	✓
E	Sequence Evaluation	49s	✓

Practice › Codeforces Solutions › MITIT Spring 2025 Qualification Round 2 ›

CF 105837C - Busy Beaver's Colorful Walk

The editorial cannot be written correctly yet because the actual problem content is missing. Right now, only the title “Busy Beaver's Colorful Walk” is provided, but there is no description of the input, output, or rules of the problem.

Practice › Codeforces Solutions › MITIT Spring 2025 Qualification Round 2 ›

CF 105837A - Balls and Bins

We are given a collection of bins. Each bin starts with some number of balls and has a maximum capacity. The key operation in the process is that whenever a bin becomes full, it is removed from active consideration and its entire content is transferred into a shared reserve.

Practice › Codeforces Solutions › MITIT Spring 2025 Qualification Round 2 ›

CF 105837E - Sequence Evaluation

The problem defines a sequence built from a very structured combinatorial recurrence. Each term is formed by considering all ways to decompose an integer into ordered or unordered collections of positive integers, and then aggregating weights derived from those decompositions.

Practice › Codeforces Solutions › MITIT Spring 2025 Qualification Round 2 ›

CF 105837B - Median of Medians

We are working with a permutation of the integers from 1 to 3N, split conceptually into three consecutive segments of equal size N.

Practice › Codeforces Solutions › MITIT Spring 2025 Qualification Round 2 ›

CF 105837D - Indivisible Inversions

We are given a permutation-like array where inversions matter, and the central object of interest is the number of inversions inside a subarray. For any segment $[i, j]$, let $f(i, j)$ be the number of pairs $i le a < b le j$ such that $p[a] p[b]$.