Yes, as long as you indicate the original source(URL). And it will also let the organization aware of the situation.
I did not know what are the rules for the competition. It happened that some one use our simulation in one of the competition, and they pretend it was done by their team. However, it was found out later when someone in the same competition search the web. So you should let people know what is the work you have really do! I hope you can win the competition with your own work! :D