I received an email, saying these two solutions to be similar:
Although they both happen to be similar, I strongly admit not having participated in any kind of plagiarism. I did not use any online IDE, and there is no way my code could have been used.
The solution to the problem is fairly straight-forward which involved only printing a bunch of numbers, and there is a high possibility that the two solutions happened to be coded in a very similar style.
I am very disappointed that I have been falsely accused of this charge.