# Implements small Python utility functions and data-structure classes (list ops, string parsing, LRU caches, frequency counters). Use when user asks to write a function or class for a well-defined algorithmic task. NOT for full apps or ML.

- **Run ID:** `5b0556d8-bd94-43a1-86c5-57f0f38c7056`
- **Status:** failed
- **Domain:** —
- **Language:** —