I was looking for a method for sandboxing submissions under Windows. Simple things, like blocking file I/O, etc. It seems that Codeforces itself runs on Windows, so I'm asking this here: do you have any input on this?

[EDIT] I would like to note I found these, but haven't tested any of it yet:

• https://github.com/DMOJ/judge (seems good, has wbox for Windows and cptbox for Unix, I will return when I take a better look)
• https://github.com/trailofbits/appjaillauncher-rs (disconsidered as it will only run on windows 8+)
• https://github.com/iceb0y/windows-container

So, does anybody know why main.edu.pl is offline? (I know it says "database error" in polish) I was hoping to submit solutions to some POI problems... Is it gone for good or what?

I have moved from emacs to vim, so I have decided to port gnull's cfparser to vimscript. The result is here.

As gnull's plugin, cfparser.vim can:

• Submit solutions
• Download tests
• Run solution with sample tests
• Keep your login through cookies
• Open problem statements
• Only dependency is curl (and bash, diff and gcc for testing solution)

You can install it with your favorite vim plugin manager, and setup as explained at the project repository:

cfparser.vim