Hello guys ,

In the yesterdays lunch time problem : https://www.codechef.com/problems/BFRIEND

Here is my code where i was using unsingned long long int and it gave WA : https://www.codechef.com/viewsolution/29204927

And here is the same code which i did long long int which gave AC :

https://www.codechef.com/viewsolution/29204946

As no value becomes negative , why is this giving WA ?

Is it because i did abs() function ??

Someone please help me

Thanks