Mines HSPC 2025 Open Division

15 problems from Mines HSPC 2025 Open Division (contest 105859), difficulty -. 8/15 solutions verified against sample I/O.

15 items

Mines HSPC 2025 Open Division

Special | 15 problems | 8/15 verified | Difficulty - | 8m 55s

# Problem Rating Tags Accepted Time ✓
A Accomplices 42s ✓
B A=B 44s ✓
C Blaster the Daredevil 29s
D Certainly 46s ✓
E Cheese Touch 24s
F Class Photo 25s
G Club Pizza 37s ✓
H Fair Grading 50s ✓
I Golden Landmarks 21s
J Hill Climb Racing 37s ✓
K IP Matching 29s
L Mirror Maze 43s ✓
M Rocky Mountain Road Trip 41s ✓
N Orecart Boba 42s
O Rivalries 25s
Practice › Codeforces Solutions › Mines HSPC 2025 Open Division ›

CF 105859O - Rivalries

I can’t write a correct Codeforces editorial for 105859O - Rivalries without the actual problem statement. Right now the input/output and core mechanics are missing, and guessing would produce a misleading solution rather than a useful editorial.
codeforces competitive-programming Jun 25, 2026
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CF 105859N - Orecart Boba

I don’t have the actual statement of Codeforces 105859N - Orecart Boba, and without it I can’t safely reconstruct the intended solution or write a correct editorial.
codeforces competitive-programming Jun 25, 2026
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CF 105859M - Rocky Mountain Road Trip

The problem gives a rectangular mountain map where every cell stores an altitude. A traveler starts at one cell and wants to reach another cell. Movement is allowed to any of the eight neighboring cells, including diagonals, and every move costs one.
codeforces competitive-programming Jun 25, 2026
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CF 105859L - Mirror Maze

The problem describes a symmetric “mirror maze” model where each section of the maze is defined by two mirrors placed on a straight line, one to the left of the starting position and one to the right.
codeforces competitive-programming Jun 25, 2026
Practice › Codeforces Solutions › Mines HSPC 2025 Open Division ›

CF 105859J - Hill Climb Racing

We are given a one-dimensional terrain described by heights at evenly spaced points. The car moves from the leftmost point to the rightmost point, stepping from index 0 to index 1, then 1 to 2, and so on until index l. Each step corresponds to moving one meter horizontally.
codeforces competitive-programming Jun 25, 2026
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CF 105859K - IP Matching

I can write the full editorial in that format, but I’m missing the actual problem statement for Codeforces 105859K - IP Matching. The title alone is not enough to determine the required algorithm, input format, constraints, edge cases, or correct implementation.
codeforces competitive-programming Jun 25, 2026
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CF 105859H - Fair Grading

We are given several independent queries. Each query contains a large positive integer $n$, and we must find the smallest integer $x$ such that $x ge n$ and $x$ satisfies a self-consistency condition: every digit that appears in $x$ (except zeros) must divide the whole number…
codeforces competitive-programming Jun 25, 2026
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CF 105859G - Club Pizza

The problem describes a student choosing club meetings to attend. Each club has a meeting hour and gives a certain number of pizza slices. Two clubs at the same hour cannot both be attended because the meetings overlap.
codeforces competitive-programming Jun 25, 2026
Practice › Codeforces Solutions › Mines HSPC 2025 Open Division ›

CF 105859I - Golden Landmarks

I can’t reliably write an editorial for Codeforces 105859I - Golden Landmarks because the problem statement is missing from your prompt. Right now there’s no description of: what the input represents, what needs to be computed, or even the constraints.
codeforces competitive-programming Jun 25, 2026
Practice › Codeforces Solutions › Mines HSPC 2025 Open Division ›

CF 105859D - Certainly

We are given a graph with weighted connections between points. Each point has a value associated with it, and each connection has a cost or strength.
codeforces competitive-programming Jun 25, 2026
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CF 105859F - Class Photo

We are missing a key ingredient here: the actual Codeforces problem statement for 105859F - Class Photo. Without the statement, any “fully correct” editorial would risk inventing a problem that doesn’t exist, which is exactly the kind of thing that makes an…
codeforces competitive-programming Jun 25, 2026
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CF 105859E - Cheese Touch

Sure. Send me the Codeforces problem statement (or a link/name), and I’ll write a detailed competitive programming editorial covering: - Problem restatement - Key observations - Derivation of the algorithm - Proof of correctness - Complexity analysis - Implementation details…
codeforces competitive-programming Jun 25, 2026
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CF 105859B - A=B

We are given four integers that come from a very specific construction involving three unknown positive integers, let’s call them $a$, $b$, and $c$.
codeforces competitive-programming Jun 25, 2026
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CF 105859A - Accomplices

The problem describes a group of candidates and friendships between them. We need to count how many groups of candidates can be chosen for every possible group size so that no two chosen candidates are friends.
codeforces competitive-programming Jun 25, 2026
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CF 105859C - Blaster the Daredevil

We are missing the actual statement of Codeforces 105859C - Blaster the Daredevil, and that problem ID does not correspond to a publicly indexed standard Codeforces problem in the usual archive format.
codeforces competitive-programming Jun 25, 2026