I'm trying to build an application for competitive programmers. I can't figure out a way of submitting a solution to a problem from the application (without having to manually opening the website and submitting it). I think (am kind of sure) that bots or web crawlers can't be used on CF for submitting a solution because robots.txt disallows that. But I have seen many applications that use bots to submit solutions. The Codeforces API also does not allow to submit a solution from another application (without opening the CF website). It only allows to read data. Can anyone suggest me a way of doing this or how does applications like cp editor do that? Any advice will be appreciated.