Is fourth test correct?

the problem seems to be very easy but idk, i have WA#4 too

Same for me, fails at 4. Please double check.

There are many fails on test 4. But it is absolutely correct, both test and answer were checked by hands multiple times. Look for error in your code.

Does cylinder contains bottom and top?

> Does cylinder contains bottom and top?

Take a look at the sample inputs again.

I've checked my formula with both kinds of formulas given in this article:
http://www.jstor.org/discover/10.2307/2691523?uid=3739232&uid=2129&uid=2&uid=70&uid=4&sid=21101178420913

(if someone is interested in full version of article - mailto Oracle@acm.lviv.ua)

I use BigInteger in Java - should be no precision issues.

Results are the same for all rectangles with 1 <= sides <= 100 and for about a billion random test cases with 1 <= side <= 1000000.

And still WA#4((( Is it definitely correct?

Now I wonder if the problem is exactly in checking if one rectangle fits into others? Or I've missed something?

Sorry for complaint. Seems that tests are correct - I've misunderstood the statement.