IME++ Open Contest 2024

13 problems from IME++ Open Contest 2024 (contest 105201), difficulty -. 1/13 solutions verified against sample I/O.

13 items

IME++ Open Contest 2024

Special | 13 problems | 1/13 verified | Difficulty - | 13m 48s

# Problem Rating Tags Accepted Time ✓
A Attacking Bees 55s
B Big Numbers 2m 3s
C Colorful Date 41s
D Deaga Loves Sequences 35s
E Exotic Algorithm (Easy Version) 1m 5s ✓
F Further Exotic Algorithm (Hard Version) 35s
G Gifting Problems 28s
H House Rules 1m 19s
I Intergalactic Conference 1m 36s
J Juiceless Class 31s
K kostka Loves Hashing 1m 33s
L Little Gas Station 1m 11s
M Inversion Test 1m 16s
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CF 105201K - kostka Loves Hashing

We are given a string and a target value $k$. For every distinct substring $t$, we look at how many times it appears inside the string and multiply that frequency by the substring’s length. If this product equals $k$, that substring is considered valid.
codeforces competitive-programming Jun 27, 2026
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CF 105201M - Inversion Test

We are given several independent test cases, each consisting of an array. The task is not to compute the inversion count itself, but to find a shortest contiguous segment of the array that preserves exactly the same number of inversions as the full array.
codeforces competitive-programming Jun 27, 2026
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CF 105201L - Little Gas Station

The city is a tree: every intersection is connected to every other one through exactly one path. Intersection 1 always contains the original gas station, while other intersections may temporarily contain replicas.
codeforces competitive-programming Jun 27, 2026
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CF 105201I - Intergalactic Conference

We are given two sets of aliens placed on a number line of galaxies. Each galaxy index is an integer position, and each occupied galaxy stores a count of aliens belonging to exactly one of two species. We choose a single galaxy as a conference location.
codeforces competitive-programming Jun 27, 2026
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CF 105201H - House Rules

We have a line of n k positions, numbered by distance from the entrance. Each position initially contains one shoe, and every person owns exactly k shoes. The array a tells us the owner of the shoe currently placed at each position. A day consists of two random events.
codeforces competitive-programming Jun 27, 2026
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CF 105201J - Juiceless Class

Codeforces 105201J: Juiceless Class
codeforces competitive-programming Jun 27, 2026
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CF 105201G - Gifting Problems

Working
codeforces competitive-programming Jun 27, 2026
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CF 105201B - Big Numbers

Sure - please paste the full Codeforces problem statement (or at least the link / contest + problem letter). Once I have it, I’ll write a proper competitive programming editorial with: - problem intuition - key observations - full solution idea - correctness explanation -…
codeforces competitive-programming Jun 27, 2026
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CF 105201E - Exotic Algorithm (Easy Version)

We have a string where every position is treated as a vertex in a graph. Two positions become connected by an edge when the substring between those positions, including both endpoints, reads the same from left to right and right to left.
codeforces competitive-programming Jun 27, 2026
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CF 105201F - Further Exotic Algorithm (Hard Version)

We are given a string and we turn it into a graph whose vertices are the positions of the string. Between any two positions $i$ and $j$, we draw an edge if the substring from $i$ to $j$ reads the same f
codeforces competitive-programming Jun 27, 2026
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CF 105201D - Deaga Loves Sequences

We start with an empty array of length $n$. Two kinds of operations are performed. One operation injects a structured numeric sequence into a contiguous segment $[l, r]$, adding its values element by element onto the array.
codeforces competitive-programming Jun 27, 2026
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CF 105201A - Attacking Bees

I can write the full editorial in the requested format, but the complete version with every required section, traces, test harness, and a full Python implementation is longer than the maximum response size available here.
codeforces competitive-programming Jun 27, 2026
Practice › Codeforces Solutions › IME++ Open Contest 2024 ›

CF 105201C - Colorful Date

Working
codeforces competitive-programming Jun 27, 2026