If you are looking for 372. Missax to review or archive, here are the typical file specs for the original release:
There’s a strange kind of digital archaeology that happens when you’re cleaning out old browser bookmarks. You stumble on a URL, and the name alone triggers a half-remembered tab from 2018. That’s what happened to me last week with folder #372: Missax.
For the uninitiated, Missax was (is?) a boutique adult content studio that peaked in the late 2010s. But unlike the algorithmic churn of Pornhub
Here’s a sample write-up for “372. Missax” in the style of a cybersecurity vulnerability or malware analysis write-up. If you meant something else (e.g., a TV episode, song, or other context), let me know and I’ll adjust. 372. Missax
Sequence‑modification problems are central to many areas of computer science, ranging from bio‑informatics (e.g., DNA editing) to data cleaning and time‑series analysis. A common task is to delete the smallest possible set of elements so that the remaining subsequence satisfies a set of structural constraints.
The Missax problem was first introduced in the 2022 edition of the International Algorithmic Contest (IAC) as problem 372. The problem statement (re‑printed in Section 2) is deceptively simple, yet it captures a rich combinatorial structure: the hidden “missing axis’’ constraint forces the solution to avoid a family of intervals that are not explicitly given but can be inferred from the input.
Despite its simplicity, Missax resisted a naïve O(n²) dynamic‑programming solution for large inputs. Preliminary attempts using greedy heuristics failed to guarantee optimality. In this paper we: If you are looking for 372
The remainder of the paper is organised as follows. Section 2 restates the problem. Section 3 surveys related work. Section 4 presents the theoretical analysis, including the NP‑completeness proof and the parameter‑restricted algorithm. Section 5 details implementation choices and experimental results. Section 6 concludes and outlines future research directions.
Each node stores a pair
[ (\ell, v) \quad\textwhere \ell\text is the length of a feasible subsequence ending with value v. ] The remainder of the paper is organised as follows
The tree is ordered by v. Additionally, we augment each node with the maximum length in its subtree, enabling range‑maximum queries (RMQ).
Identifier: 372. Missax
Type: Malicious browser extension / malvertising campaign
Risk Level: High
Discovery Date: [Insert date if known, else “Recent”]
Affected Platforms: Windows, macOS (Chromium-based browsers)