I have an idea for a very neat problem envolving trees and mathematics. Althought it´s not trivial, math-minded folks will likely solve it in no more than a few minutes. So i´d like to know where can i propose only this problem, so that it is avaible to be used in future contests if it interests anyone.
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Maybe you could try sending it to the folks at CodeChef for a long contest problem proposal.
Do CodeChef usually replies for problem proposals? I didn't get any response (approved or disapproved) for both of my two problems. This is important for me so I can use those problems in other contests if they are disapproved.
HackerRank happily accepts (and pays for) individual problems, and then somebody takes care of using it in a contest.
As a side note, I wouldn't recommend publicly sharing stuff like "Hi, I'm going to propose a problem about X and Y". I googled the name associated with your CF account and it seemed legit, assuming it is, if I see a contest with you as a problem setter any time soon, I'll know what to expect. I know that this hint would be really small, but still :)
You're absolutely right, but in this case it doesn't really matter, since it is pretty obvious from the problem's description what it is about, and it wasn't really my goal to hide it when i was making it. The creative process lies on other aspects of it. Nevertheless, you are correct and i will be more careful, since that can affect someone's performance at future contests.
I had submitted a problem proposal to codechef in November. They accepted it few weeks ago. I also sent one to codeforces 2 months and one to codechef 2 months ago. No reply yet.