Check : https://cpeditor.org

If you found any bugs or have any feature requests, please open an issue here, and don't forget to follow the issue templates. Users' responses are important for contributors to improve the project.

If you want a try on developing, you can install Qt and CMake, then fix bugs / make new features by yourself! After finishing the coding, just open a pull request here. Don't worry if you are not familiar with Qt / GUI programming, Google is your friend, and Qt is a well documented library. I've never used Qt before contributing to CP Editor, but I've made 33 commits, including 1979 additions and 1620 deletions up to now.

Your extension will have it’s own codeforces soon :D

There have been many new features since 5.0:

• New Test Cases UI. Now you can open up to 100 test cases or delete some of them. It's also easier to add tests from files.

• New Diff Viewer. The new diff viewer uses diff-match-patch, so that you can see the beautiful diff result in HTML.

• New File Logic. Now the tab status/open files/save files are almost the same as Sublime. For example, external file changes on the disk is detected.

• Hot Exit. Now you can save the status for the next session.

• Transparency Setting. You can set the transparency for the editor. Then, you can see the problem statement/your desktop/some pictures while coding, or just be cool.

• Single Application. Now when you open a new file while there is a CP Editor running, the new file will be opened in a new tab instead of a new window.

• Open Contests. You can open a folder with A.cpp, B.cpp, ..., Z.cpp easily. The folder and the number of files (number of problems) is chosen by you.

• Command-Line Options. See CPEditor --help for more information. Now it's easier to open CP Editor from the command line.

• Open File Progress Bar. Show progress bar for file opening.

• Tab Bar Context Menu. A menu with options like Close Others/Reveal in Explorer. Right-click on the tab bar to open it.

• Many bug fixes.

Some features are not well-tested yet, if you are interested in them, try it and report bugs if you find any.

Again, contributions are always welcomed, together we can build a better editor for ourselves.

When I press ctrl+shift+U on contest dashboard, I got [an invalid Payload was delivered on the listening port] in CP-editor, How can I resolve this?

Did the same as mentioned in above procedure but getting the error as -

[You will not be able to submit code to Codeforces because CFTools is not installed or is not on SYSTEM PATH. You can set it manually in settings.]

Can anyone help me with the solution for this problem!!

Thanking You in advance.

will it work on linux

I did everything as above and it worked well but i still don't know how to submit what should i do to submit a problem.

Edit: never mind i found out how to do it now

Can it be used to submit on other online judges? If so, please tell me how.

Can you make a mode which is all dark instead of only the code is dark?

Would someone please tell me how can I append -std=c++11 to my compile command!

Java users -> class name of main class must be "a"

I followed the above-mentioned steps for the setup of cf-tools. But when I run the command cf test, it gives an error Runtime Error #1 ... exec: "dummy": executable file not found in %PATH%.
Rest of the commands like cf gen, cf list, cf submit, cf stand are working fine.
Please help.

When I tried to submit then it print "cannot find csrf".

How can I solve this issue?

1. Thanks snapdragon3101 for the awesome editor.
2. I have a few questions regarding this -

• Is it possible to change color of the messages shown in console? I want all of it to be in white, I find red color irritating and by default all the variables printed in cerr are shown red in console.
• Can I remove/switch off the auto addition of first 6 lines in the template i.e. problem name, contest, time limit etc ?
• How can I add the placeholder of cf-tool into template ? I could not find any tutorial regarding this.
• How can I add a custom background theme? Or can you share the path where theme files are stored on linux so I can change background color manually?

Also, I want to know whether the test cases parsed by competitive companion are stored permanently on system and if so then what is the location so I can delete it manually?

snapdragon3101 When I submit code from the editor, few lines goes out of indentation automatically, like in this submission, the 3rd and 4th line of main() function is out of indent, also, the tab width becomes too large in codeforces automatically(I guess approx 8), although in editor tab width is set to 3. Can you please fix this.

Also, in every live contest, when I parse problem-A using competitive companion, the new file is created with name — "0" instead of "A" and with wrong URL(therefore I cannot submit it from the editor), don't know whether the bug is in parser or cpeditor. Can you please look into this.

I have downloaded it and setup as per said those 7 steps...and also restarted my device. But now when i try to run cf.exe it just appears a window and just gone in a second. Maybe something preventing the exe file to run. I turned off windows defender but doesn't change the situation. I also have competitive companion on my chrome.

can you add option of IO in left and Editor in right. And option of vertical splitting of IO and Editor.

feature request : please add autocomplete feature.

How do I load a particular template everytime I open a new problem? Currently, what opens up is a file with a few comments

please say how to get the template file? What I have done is- 1)setup the cf-tool and added template to it 2)also added cf-tool to my path But when i click on Competitive Companion in browser what i get in cp-editor are only few comments like these..

//Problem: F. 1 2 3 4 ...
// Contest: Codeforces — Codeforces Round #696 (Div. 2)
// URL: https://mirror.codeforces.com/contest/1474/problem/F
// Memory Limit: 256 MB
// Time Limit: 5000 ms
// Powered by CP Editor (https://github.com/cpeditor/cpeditor)

What to do now?

Whenever I try to submit to codeforces CP editor is asking me to select language. PS: I have manually set CF tools through preferences. Anyone please help me out in this....

Is there a way to parse all tasks of a contest at once into cp editor instead of opening each problem and parse it?

Hi. Could you implement the following features? Thanks in advance.

1. Custom keybinding for Detached Run (if possible, other editor functionalities too).

2. When I press Shift + Home, all the characters before the cursor will be selected, including the tab/space for the indentation. Can you fix it so only the characters after the indent are selected?

3. Detached Run without compiling, only running the executable in the terminal window.

What should I do if I want to use c++ 64 bit features like using __int128 ? It gives error if I use __int128 currently.

Is it possible to have the author's name and the current time (the placeholders like in the cf-tool) in the template? Right now, if I set up the template with the placeholders in the cf-tool, it won't work.

dose it work for mac ?

how to enable Hinting on CP Editor?

Hi, sorry for necroposting, but is anyone able to increase font size above the default? I tried a lot from preferences but it doesn't seem to increase :/

decided to try it for the first time and and saw a mind-blowing thing: pressign home button sends cursor to start of line ignoring tabulation

When adding template absolute path it says its invalid, pls help!

whenever i try to login on cf config it says "cannot find csrf" ....can someone help? also, where can i find the 'cf config' file on macOS?

/