Discussion @ 1265. Mirror @ Timus Online Judge

Burunduk1 C and Pascal [8] // Problem 1265. Mirror 29 Sep 2005 13:05

There are 2 same solutions (C, Pascal).
C solution gets WA, 9
Pascal solution gets AC

Why??? Please, give me some hints about it.

Ivankov Dmitry I think it's precision problems ) [7] // Problem 1265. Mirror 29 Sep 2005 22:02

For example (sizeof(long double) == 8)

Burunduk1 Re: I think it's precision problems ) [6] // Problem 1265. Mirror 29 Sep 2005 22:28

I thought it's so only in Visual C.
GNU C and Borland C compilers use sizeof(long double) = 10.
Am I right?

Ivankov Dmitry Re: I think it's precision problems ) // Problem 1265. Mirror 29 Sep 2005 22:54

Yes.
But as far as I know Intel C++ compiler is used there. And in ICL (at least in 8.1) sizeof(long double)==8

Vladimir Yakovlev (USU) This problem suppose using of long arithmetics (-) [4] // Problem 1265. Mirror 29 Sep 2005 22:57

Burunduk1 Re: This problem suppose using of long arithmetics (-) [3] // Problem 1265. Mirror 30 Sep 2005 00:14

Of course!
But solution without it is more short and beauty. :)
And it's more interesting to solve problem
using only Extended.

svr Re: This problem suppose using of long arithmetics (-) [2] // Problem 1265. Mirror 4 Feb 2007 14:24

But if juri suppose exact numbers
when answer is unequivocal it would be funny
try adjust eps-heuristics. Next time you would be killed by
rejujement.
I have Ac using 120-digits integers and dot-product as angle haracteristics. Thus use only +,-,*,<,==.

Vedernikoff Sergey Re: This problem suppose using of long arithmetics (-) [1] // Problem 1265. Mirror 6 Feb 2007 13:38

My program doesn't use any long arithmetics - only standard Pascal's real (or extended?) type, and it hasn't any problem with accepting this problem. If jury assumed using long arithmetics, then testset is very weak...

DixonD (Lviv NU) Re: This problem suppose using of long arithmetics (-) // Problem 1265. Mirror 13 Apr 2007 17:25

Could anybody say me how find point, symmetrical to given point relatively some line?
Without division...
Thanks

Discussion of Problem 1265. Mirror