HOJ Versions Save

1. Add: support File IO
2. Fix: filter pre contest records on the contest rank
3. Add: Allow submission after the end of the contest(June 11, 2023)
4. Fix: scrollboard bug

1. Increase the focus mode of training, contest and group problems.
2. Reconstruct back-end authentication process and dynamic configuration of nacos.
3. Fix known remote judge bugs such as hdu and poj.
4. Optimize the homepage layout, and add "statistics submitted in the last week" and "latest problems" modules.
5. Fix some bug known to the group.

1. Add: edit or add the discussion category
2. Add: contest award settings
3. Add: ACM contest support scroll board
4. Optimization: the synchronous display of accounts among multiple tab pages in the front-end browser
5. Fix: some known bugs

1. Add support for OI problem test case subtask function
2. Add support for ACM problem test case 'ergodic without error' function
3. Fix known bugs

1. 增加题目标签二级分类
2. 增加超管对提交人工评测、取消评测的功能

1. fix frontend ui bug
2. fix get atcoder problem id format bug
3. fix the problem that HDU submission frequency limit does not cause submit failed
4. tip: This version will be in a long-term stable operation version

1. 增加个人主页热力图
2. 增加题目页的在线调试功能

1. 适配CF重定向问题
2. 修复爬取GYM的题目pdf格式的问题
3. 增加系统开关，可定制化程度提高

1.稳定运行版本 2.团队功能完善

1. 增加团队功能
2. 恢复HDU的vjudge判题