Any hints about test 7?

Float solution is'n unique.
Checking program of admins must printed in
problem statement or how precision 0.0001 verifing
Ac!!
Got Ac finally without any attention to precision
as a pupil working with float in naive way.
This is due to kindness of good teachers which enable
us with harsh,  stable tests.

Edited by author 06.11.2007 13:30

I happy!!!!!!!!!!!

Use double instead of float. More over, you can just output answers without setting any precision.

subj...

I mean, if you exclude it, so why do you keep the results of accepts
of some contestants? I precisely know, that some people accepted it
with writeln(0,#13#10,0).

To my opinion, you'd better left it with that bug, if you can't
properly supply it. I also think, that many of the Timus'
problemsolvers think the same.