WA in CZ_PROB2

enigman 2012-05-17 08:14:01 UTC #1

I am getting the right answer for many numbers uptil 999999999 on Ideone for my code in C.
But for reasons I fail to understand, I keep getting a Wrong Answer whenever I submit it here.
Can someone please tell me what is wrong?

leppyr64 2012-05-17 11:08:38 UTC #2

General Rule: In almost all programming contests you should always end your output with a newline character. Based on that information, do not do this:

if(t) printf("\n");

Do this:

printf("%d\n",sum);

That is not your issue in this case. Have you read the comment below yours on the problem page?

enigman 2012-05-17 13:37:27 UTC #3

Thanks for that tip:) But initially my code was in this format only.

printf("%d\n",sum);

I changed it just to check whether that was the bug. And it didn't turn out to be.

Yes. I did read that comment. In fact even I seemed to get right answers for numbers greater than 999,999,999. ( I verified the answers with this : javascripter.net/math/calcul ... ulator.htm)

I really don't understand where I am going wrong.
Please help!

leppyr64 2012-05-17 14:23:24 UTC #4

So what is the largest sum in this range?

enigman 2012-05-17 14:50:55 UTC #5

Ooooh. I think I get it now.
Seems like long isn't enough.

enigman 2012-05-18 03:58:45 UTC #6

I got it at last after so many tries!
I should have taken the Note more seriously. Or the note could have been more specific.

leppyr64 2012-05-18 04:19:31 UTC #7

The note is more than clear enough. Constraints are given so that you can choose the proper datatype. Unfortunately the constraint in the problem statement is not correct, so the comment on the problem clarifies it perfectly.