Hii!! I was wondering about problem-setting on codeforces and came across many blogs. Many of them explained problem-setting, creating ideas and writing solutions, but apart from them, I want to know about major steps we will take when getting involved in the process. The first is, we submit a problem proposal.

Then when our problem gets approved, what are we supposed to do? Visit polygon? Where will we create our test set and discuss about the problems with others involved in the contest? Where are the checkers and validators written? If I am not a codeforces user, can I still write problems on codeforces using polygon only?

I have never used polygon and never set a problem, so I want to have an idea of important phases I need to complete to finally publish my problem. Thank you so much!!