UVa OJ Board

Hello, With immense pleasure we, on behalf of Department of Computer Engineering, IT-BHU, invite you to participate in an Online Coding festival, Codefest http://itbhu.ac.in/codefest , which had started on 25th January and will last till 31st March, 2010. It includes exciting competitions on Applica...

Hi,
I am trying to take part in upcoming contest of UVA but as I click on the link on right side it shows an error that "You are not authorized to see this page".
Please guide me how to take part in contests of UVA.

Thanks in advance

I got wrong answer in this question, but it is working for negative test cases and some other cases. I am not getting in what condition it is failing so please help me. If someone have extra test cases for this problem please give so i can crosscheck my results.