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LQDOJ: Le Quy Don Online Judge
===
[](https://lqdoj.edu.vn/)
[](https://python.org)
[](https://ubuntu.com/download)
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[](https://www.gnu.org/licenses/agpl-3.0.en.html)
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## Overview
Homepage: [https://lqdoj.edu.vn ](https://lqdoj.edu.vn )
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Based on [DMOJ ](https://dmoj.ca/ ).
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Supported languages:
- Assembly (x64)
- AWK
- C
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- C++03 / C++11 / C++14 / C++17 / C++20
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- Java 11
- Pascal
- Perl
- Python 2 / Python 3
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- PyPy 2 / PyPy 3
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Support plagiarism detection via [Stanford MOSS ](https://theory.stanford.edu/~aiken/moss/ ).
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## Installation
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Most of the setup are the same as DMOJ installations. You can view the installation guide of DMOJ here: https://docs.dmoj.ca/#/site/installation.
There is one minor change: Instead of `git clone https://github.com/DMOJ/site.git` , you clone this repo `git clone https://github.com/LQDJudge/online-judge.git` .
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### Some frequent difficulties when installation:
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1. Missing the `local_settings.py` . You need to copy the `local_settings.py` in order to pass the check.
2. Missing the problem folder in `local_settings.py` . You need to create a folder to contain all problem packages and configure in `local_settings.py` .
3. Missing static folder in `local_settings.py` . Similar to problem folder, make sure to configure `STATIC_FILES` inside `local_settings.py` .
4. Missing configure file for judges. Each judge must have a seperate configure file. To create this file, you can run `python dmojauto-conf` . Checkout all sample files here https://github.com/DMOJ/docs/blob/master/sample_files.
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5. Missing timezone data for SQL. If you're using Ubuntu and you're following DMOJ's installation guide for the server, and you are getting the error mentioned in https://github.com/LQDJudge/online-judge/issues/45, then you can follow this method to fix:
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```
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mysql
-- You may have to do this if you haven't set root password for MySQL, replace mypass with your password
-- SET PASSWORD FOR 'root'@'localhost' = PASSWORD('mypass');
-- FLUSH PRIVILEGES;
exit
mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -D mysql -u root -p
mysql -u root -p -e "flush tables;" mysql
```
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6. Missing the chat secret key, you must generate a Fernet key, and assign a variable in `local_settings.py` like this
```python
CHAT_SECRET_KEY = "81HqDtbqAywKSOumSxxxxxxxxxxxxxxxxx="
```
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## Usage
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Suppose you finished all the installation. Everytime you want to run a local server, follow these steps:
1. Activate virtualenv:
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```bash
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source dmojsite/bin/activate
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```
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2. Run server:
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```bash
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python3 manage.py runserver 0.0.0.0:8000
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```
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3. Create a bridge (this is opened in a different terminal with the second step if you are using the same machine)
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```bash
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python3 manage.py runbridged
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```
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4. Create a judge (another terminal)
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```bash
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dmoj 0.0.0.0 -p 9999 -c < path to yml configure file >
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```
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Here we suppose you use the default port 9999 for bridge in `settings.py` . You can create multiple judges, each should be in a seperate terminal.
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**Optional**
5. Run celery worker (This is server's queue. It may be necessary in some functions)
```bash
celery -A dmoj_celery worker
```
6. Run a live event server (So everything is updated lively like in the production)
```bash
node websocket/daemon.js
```
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## Deploy
Most of the steps are similar to Django tutorials. Here are two usual steps:
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1. Update vietnamese translation:
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- If you add any new phrases in the code, ```python3 manage.py makemessages```
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- go to `locale/vi`
- modify `.po` file
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- ```python3 manage.py compilemessages```
- ```python3 manage.py compilejsi18n```
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2. Update styles (using SASS)
- Change .css/.scss files in `resources` folder
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- ```./make_style.sh && python3 manage.py collectstatic```
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- Sometimes you need to press `Ctrl + F5` to see the new user interface in browser.
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## Screenshots
### Leaderboard
Leaderboard with information about contest rating, performance points and real name of all users.
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### Admin dashboard
Admin dashboard helps you easily managing problems, users, contests and blog posts.
### Statement editor
You can write the problems' statement in Markdown with LaTeX figures and formulas supported.
### Chat
Users can communicate with each other and can see who's online.
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