Give me limitations for R, wi, li, Wi and Li. I do not know how small they are. So if R = 0.00000000000000001, this test is relly "tricky", I understand. Mischief managed :)

P.S. To get AC after rejudge you should avoid floating point division in your program. Just simplify your formula.

No, I use more than one floating point division and square roots in my program and I managed to get AC. My only bug was with the test, where points lie in the opposite to each other.

There are no "bad" and "unpity" tests in this problem. And simple solution with floats can be AC'ed just after a bit of thinking ;)

Edited by author 09.04.2007 04:47