My sublime text was not responding due to some error during the contest so i used ideone.com to run my code. I didn't know that it was in general settings and could giver others users access to see my code. This is a huge mistake. It's a pure coincidence what has just happened. Someone submitted the code before i could. Please return my ratings.

I was stuck with this problem from long. Thanks for the website. Here I can practice all good questions topicwise.