The 2024 ICPC Latin America Championship

12 problems from The 2024 ICPC Latin America Championship (contest 105053), difficulty -. 12/12 solutions verified against sample I/O.

12 items

The 2024 ICPC Latin America Championship

ICPC/IOI | 12 problems | 12/12 verified | Difficulty - | 11m 2s

# Problem Rating Tags Accepted Time ✓
A Almost Aligned 56s ✓
B Beating the Record 1m 2s ✓
C Clever Cell Choices 1m 13s ✓
D DiviDuelo 45s ✓
E Expanding STACKS! 45s ✓
F Fair Distribution 1m 7s ✓
G Greek Casino 44s ✓
H Harmonic Operations 1m 7s ✓
I Insects, Mathematics, Accuracy, and Efficiency 55s ✓
J Joys of Trading 38s ✓
K KMOP 54s ✓
L LED Matrix 56s ✓
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CF 105053L - LED Matrix

We are given a rectangular LED matrix and a rectangular pattern that is supposed to scroll across it from right to left. The matrix has fixed dimensions, and each cell is either functional or broken. A functional LED can be turned on, while a broken one can never light up.
codeforces competitive-programming Jun 28, 2026
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CF 105053H - Harmonic Operations

We are given a fixed string and a sequence of operations that repeatedly transform it. Each operation is either a full reversal of the string or a cyclic rotation by some amount to the left or right.
codeforces competitive-programming Jun 28, 2026
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CF 105053I - Insects, Mathematics, Accuracy, and Efficiency

We are given a set of points in the plane, all lying inside or on a fixed circle centered at the origin with radius $R$. These points represent existing crops.
codeforces competitive-programming Jun 28, 2026
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CF 105053K - KMOP

We are given a phrase split into several words, and we are allowed to build an acronym by taking a prefix from each word and concatenating these prefixes in order.
codeforces competitive-programming Jun 28, 2026
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CF 105053J - Joys of Trading

Each resource has two competing production technologies, one used by each village. For resource $i$, Apolyanka spends $Ai$ person-hours per unit, while Büddelsdorf spends $Bi$.
codeforces competitive-programming Jun 28, 2026
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CF 105053G - Greek Casino

We start with a single pointer sitting on a slot labeled 1, and we repeatedly perform a randomized transition that depends on the current slot. At each step, we sample a value $y$ from $1$ to $N$ with given weighted probabilities.
codeforces competitive-programming Jun 28, 2026
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CF 105053F - Fair Distribution

Each blueprint describes a type of building. If a child receives a blueprint with parameters $G$ and $R$, they construct a building with one ground floor of height $G$ and then choose how many residential floors to add, each contributing height $R$.
codeforces competitive-programming Jun 28, 2026
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CF 105053D - DiviDuelo

We are given a number $N$. From this number we construct a set consisting of all its positive divisors. Two players then take turns picking elements from this set until nothing remains. The starting player is interested only in the divisors they personally pick.
codeforces competitive-programming Jun 28, 2026
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CF 105053E - Expanding STACKS!

We are given a chronological log of events involving N customers. Each customer appears exactly once when they enter the restaurant and exactly once when they leave.
codeforces competitive-programming Jun 28, 2026
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CF 105053C - Clever Cell Choices

We are given a grid where some cells are blocked and the rest are free. A game starts when the first player chooses any free cell and places a stone there.
codeforces competitive-programming Jun 28, 2026
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CF 105053B - Beating the Record

We are simulating a repeated attempt to clear a sequence of at most four game levels, where each full attempt either succeeds or fails depending on independent probabilistic choices made inside each level.
codeforces competitive-programming Jun 28, 2026
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CF 105053A - Almost Aligned

Each meteor starts at a known point in the plane and moves in a fixed direction with constant velocity. After time $t ge 0$, meteor $i$ is at $$(xi(t), yi(t)) = (xi + v{x,i} t,; yi + v{y,i} t).
codeforces competitive-programming Jun 28, 2026