Your solution 158176906 for the problem 1681C significantly coincides with solutions KuzaBest/158166300, Ismail_Akram/158176906. 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.com/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 swear that I didn't cheat in the contest, and all the codes in this contest are 100% written by me and I didn't use any online IDE.
I Don't Know the other user KuzaBest even that we aren't in the same country. My rate will also decrease in that constest and probably i will lose expert but i don't care cuz i don't want such misjudgment to happen.
MikeMirzayanov I've compared the two solution and I think the similarity between them is normal and many user could do such a solution.