Attention!

Your solution 306716764 for the problem 2069B significantly coincides with solutions alpha_cpp/306716764, visitor7/306723357. Such a coincidence is a clear rules violation. Note that unintentional leakage is also a violation. For example, do not use ideone.com with the default settings (public access to your code). If you have conclusive evidence that a coincidence has occurred due to the use of a common source published before the competition, write a comment to post about the round with all the details. More information can be found at http://codeforces.net/blog/entry/8790. Such violation of the rules may be the reason for blocking your account or other penalties. In case of repeated violations, your account may be blocked.

I don't know why the system detected that my solution coincides with visitor7 as I have written the code myself using my knowledge and neither I have shared any of my solutions to anyone. I see the logic we have used to solve the question was pretty common and also the structure of code is general. Please check this again Mike Mirzayanov.