991 - Safe Salutations

All about problems in Volume 9. If there is a thread about your problem, please use it. If not, create one with its number in the subject.

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991 - Safe Salutations

Post by abhi » Mon Nov 20, 2006 2:58 pm

hi can anybody tell me why i get WA

Code: Select all

# include <stdio.h>

int main()
	int n,i;
	int arr[20];


return 0;

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little joey
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Post by little joey » Mon Nov 20, 2006 3:13 pm

Because your formula is not correct. Your answers for 1 and 2 pairs are wrong, which can be easily verified if you make the drawings.

PS. Put the problem title in the subject line too if you create a new thread.

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Post by zxul767 » Sat Oct 13, 2007 6:18 am

I have written a solution for this problem, and I'm sure the formula I use is correct, yet I keep on getting WA on the new uva judge site.

Here is my code:
Code removed...
Can anyone tell me or provide a hint as to why I keep on getting WA?[/quote]
Last edited by zxul767 on Wed Oct 17, 2007 5:43 pm, edited 1 time in total.

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Post by Jan » Sat Oct 13, 2007 10:12 am

Print a blank line between cases. not after each case.
Ami ekhono shopno dekhi...

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Shouldn't it present PE instead of WA?

Post by zxul767 » Sat Oct 13, 2007 7:12 pm

I had already thought about what you told me Jan, so I removed the last two newline chars and submitted it back, but still got WA. After a while, I decided to remove only the very last newline char and got AC.

I think the judging for this problem must be corrected, since it should give PE as verdict in this case, not WA.

Anyway, thanks for your help Jan!

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Post by mukeshtiwari » Wed Oct 17, 2007 8:57 pm

hello abhi .....
this problem is related to a well known number series ( binary tree enumartion ).
hope it is helpful .

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