Solution copied from ideone

I used Ideone for testing my solutions. Now I got to know that someone has submitted same solution as of mine from May Long challenge.
My solution: CodeChef: Practical coding for everyone
Other user solution : CodeChef: Practical coding for everyone
I think we must never use ideone during online contest.

Ideally, if you want to report that some users have cheated, or if you want to appeal against having been caught for plagiarism, you should only send an email to help@codechef.com , and wait for a few weeks to get a reply.

But despite this instruction, if you do feel that you need to say something publicly, you can use this topic. Any other new topic that you start related to this will be closed, and you will also risk getting suspended.