| # USACO Dataset | |
| This dataset contains problems from the USA Computing Olympiad (USACO) organized by *seasons*. Each season runs from **November of the previous year → October of the current year, plus the US Open**. One JSONL file per season is provided (``usaco_<season>.jsonl``) for efficient storage and loading. | |
| ## Dataset Statistics | |
| - **Total Problems**: 680 | |
| - **Total Seasons**: 14 | |
| - **Total Sample Cases**: 854 | |
| - **Total Test Cases**: 9,055 | |
| ## Data Structure | |
| Each record contains: | |
| - `id`: Unique stable identifier for the problem | |
| - `contest_name`: USACO contest name (e.g., "USACO_24jan") | |
| - `difficulty_group`: Problem difficulty level (bronze, silver, gold, platinum) | |
| - `problem_name`: Name of the specific problem | |
| - `problem_statement`: Problem description in Markdown format | |
| - `sample_data`: Dictionary with `inputs` and `outputs` lists for sample test cases | |
| - `test_data`: Dictionary with `inputs` and `outputs` lists for test cases | |
| - `num_sample_cases`: Number of sample test cases | |
| - `num_test_cases`: Number of test cases | |
| - `season`: Season year (e.g., "2024") | |
| - `checker`: Always null (USACO uses standard output checking) | |
| - `checker_interface`: Always null (USACO uses standard output checking) | |
| ## Seasons Available | |
| | Season | Problems | File | | |
| |--------|----------|------| | |
| | 2025 | 48 | `usaco_2025.jsonl` | | |
| | 2024 | 48 | `usaco_2024.jsonl` | | |
| | 2023 | 48 | `usaco_2023.jsonl` | | |
| | 2022 | 48 | `usaco_2022.jsonl` | | |
| | 2021 | 48 | `usaco_2021.jsonl` | | |
| | 2020 | 48 | `usaco_2020.jsonl` | | |
| | 2019 | 47 | `usaco_2019.jsonl` | | |
| | 2018 | 47 | `usaco_2018.jsonl` | | |
| | 2017 | 47 | `usaco_2017.jsonl` | | |
| | 2016 | 48 | `usaco_2016.jsonl` | | |
| | 2015 | 38 | `usaco_2015.jsonl` | | |
| | 2014 | 54 | `usaco_2014.jsonl` | | |
| | 2013 | 55 | `usaco_2013.jsonl` | | |
| | 2012 | 56 | `usaco_2012.jsonl` | | |
| ## Difficulty Distribution | |
| | Difficulty | Problems | | |
| |------------|----------| | |
| | Bronze | 192 | | |
| | Gold | 184 | | |
| | Platinum | 118 | | |
| | Silver | 186 | | |
| ## Loading Examples | |
| ```python | |
| from datasets import load_dataset | |
| import json | |
| # Load all seasons (merged dataset) | |
| all_ds = load_dataset("vectorzhou/USACO", split="train") | |
| # Load a specific season using data_files | |
| s2025 = load_dataset( | |
| "vectorzhou/USACO", | |
| data_files="usaco_2025.jsonl", | |
| split="train", | |
| ) | |
| # Or load directly as JSONL | |
| with open("usaco_2025.jsonl", 'r') as f: | |
| problems_2025 = [json.loads(line) for line in f] | |
| # Filter by difficulty across all seasons | |
| bronze_problems = all_ds.filter(lambda x: x['difficulty_group'] == 'bronze') | |
| # Filter by season (when loading all data) | |
| season_2024 = all_ds.filter(lambda x: x['season'] == '2024') | |
| # Access a specific problem | |
| problem = all_ds[0] | |
| print(f"Contest: {problem['contest_name']}") | |
| print(f"Difficulty: {problem['difficulty_group']}") | |
| print(f"Problem: {problem['problem_name']}") | |
| print(f"Season: {problem['season']}") | |
| print(f"Sample inputs: {len(problem['sample_data']['inputs'])}") | |
| print(f"Has custom checker: {problem['checker'] is not None}") # Always False for USACO | |
| ``` | |
| ## Data Organization | |
| The dataset follows USACO's seasonal structure: | |
| - **November-December**: Counted towards the following year's season | |
| - **January-October + US Open**: Counted towards the current year's season | |
| - Each season typically contains 3-4 contests with Bronze, Silver, Gold, and Platinum divisions | |
| ## Format Benefits | |
| - **JSONL format** for easy streaming and processing | |
| - **Season-based files** for selective loading of specific time periods | |
| - **Consistent schema** across all seasons | |
| - **Efficient storage** with one record per line | |
| ## Data Source | |
| The data was crawled from the USACO platform and organized into the following structure: | |
| - Problem statements in Markdown format | |
| - Sample and test cases with input/output pairs | |
| - Contest and difficulty metadata | |
| - Season classification for temporal organization | |
| - Comprehensive coverage of available problems | |
| ## License | |
| Please respect the original terms of use of the USACO platform when using this dataset. | |