zhblue/hustoj

Features

• Contest Scoring Engines - Organizes ACM-ICPC and NOIP style events with weighted scoring and penalty calculations to compute rankings.
• CTF Competition Hosting Platforms - Provides a complete platform for hosting competitive programming events, including problem hosting, submissions, and automated grading.
• Contest Ranking Algorithms - Computes rankings based on problem count and time penalties using OI-style scoring and weighted test cases.
• Automated Judging Validators - Provides custom checker programs to validate submissions when multiple correct answers or specific precision is required.
• Remote Judging Delegation - Delegates code evaluation to external servers via URL and credentials to retrieve results.
• Code Plagiarism Detection - Compares source code similarity between users using token analysis to identify potential cheating.
• Competitive Programming Platforms - Provides a full online environment for practicing algorithmic problem solving, including grading and leaderboards.
• Online Judges - Provides the infrastructure to execute and validate code submissions under strict time and memory constraints.
• Practice Problem Repositories - Maintains a repository of programming problems for students to practice and validate solutions in a controlled environment.
• Computer Science Education - Manages student accounts and curated problem sets for computer science course instruction.
• Weighted Ranking Calculations - Implements competitive programming rankings based on partial correctness and weighted test case scores.
• Multi-Language Runtime Support - Executes and validates submissions written in various languages including C#, Java, Python, and PHP.
• Sandboxed Code Evaluators - Executes and validates submitted source code in a sandbox against expected test outputs.
• Custom Checker Programs - Executes user-defined checker programs to validate submissions when correct output is non-unique.
• Plagiarism Detection - Compares source code similarity between users using token thresholds to detect plagiarism.
• Grading Systems - Provides a backend service that executes submissions in multiple languages and validates them against test cases for automated scoring.
• Test Data Management - Organizes input and output files with support for weighted scoring based on filename conventions.
• Contest Scheduling Utilities - Implements tools for scheduling competitive programming events, including start times and archival states.
• Problem Set Importers - Offers a searchable directory of programming challenges with metadata such as difficulty tags and success rates.
• Database Queue Drivers - Implements a submission queue using database tables to trigger the judging kernel for processing.
• Language Support Extensions - Allows the system to be extended to support additional programming languages by updating language masks.
• Scoring Rule Switching - Configures scoring standards for competitions, including switching between ACM and OI scoring logic.
• Self-Contained Judge Deployments - Provides a standalone environment including a dedicated database and judging engine for immediate deployment.
• Containerized Deployment Images - Packages the web, database, and judging components into container images for rapid deployment.
• UDP Job Triggers - Initiates code evaluation by listening for UDP packets or HTTP requests from the web layer.
• Remote Judging Integrations - Implements a remote judging model that forwards submissions to external servers via URL and credentials.
• In-Browser Code Execution - Provides a web-based editor for users to test and run code snippets directly in the browser.
• Grading Rule Definitions - Allows administrators to define scoring logic and constraints such as time and memory limits per problem.
• Subtask Point Assignment - Assigns specific point values to groups of test cases using bracketed naming conventions.
• Throughput Optimizations - Increases judging speed using containerized environments and language-specific dedicated instances.
• Filename-Based Weighting - Derives test case point values from bracketed naming conventions in the data directory for partial scoring.
• Language Support Configuration - Extends supported languages by updating bitmasks and rebuilding the judging environment.
• Access Control Managers - Controls contest participation using private flags, password protection, and imported member lists.
• Contest Participation Controls - Controls access to contests via private lists or passwords and supports bulk importing of student accounts.
• Code Pattern Similarity Detection - Analyzes source code similarity between users to detect plagiarism and academic dishonesty.
• Resource Limit Configurations - Defines time limits and memory constraints to ensure fair and accurate code evaluation.
• Randomized Test Data Generators - Produces randomized input sets using a generator and derives corresponding output via a reference solution.
• Random Value Generators - Produces randomized input files for test cases using a meta-language generator.
• Test Case Weighting - Assigns point values to individual test cases using bracket notation in filenames to calculate partial scores.

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