You might have seen professional coders using CHelper plugin in IntelliJ idea and google chrome. Well, it is a necessary tool to parse the contest and helps reduce the wastage of time in submitting and testing your code.

For new people, you might face some issues regarding the installation of CHelper and in using it, issues like:

1) Test cases are not fetched by CHelper. So when you run your test cases console will be empty and show just dashed lines and displays that all the test cases have passed successfully. Sol. Use the chrome plugin in this case and when you click that '+' icon it will fetch all the test cases for sure, then you can navigate to your IntelliJ IDE to write your code.

2) https://codeforces.net/blog/entry/58144 Sol. in the above issue it might happen sometime that it still doesn't solve even when you restart IntelliJ idea. In that case, rebuilt your project and then compile it.

If you are facing any other issue with CHelper please comment down below so that I can extend the list. This really helps people who are new to competitive programming and are eager to improve themselves.