hey… plz look at this solution,it’s generating WA each time: CodeChef: Practical coding for everyone
problem: BEX Problem - CodeChef
plz help, am pissed off this problem.
Check this case.
6
9 english
-1
3 graphics
-1
6 mathematics
-1
You code should be throwing a SIGSEGV for this test case. (But it is not, and I don’t know why!)
The idea is this. First, you add a book. Then, you take it out. After this point, in your code, value of i is -1. Now, you add another book on to the pile. In your code, the check if(l<=b[i].serial) will execute. But b[-1] is undefined. This should have thrown a SIGSEGV.
Try making sufficient changes to handle the case, when you are adding a book on top of an empty pile. This might be the reason.
Programming Tip: Try indenting your code. It is easy to understand/debug. 
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