Edit my first comment, see the next one for complete explanation. I can share my code via email if you don't have an access to it.

Edited by author 21.12.2015 22:46

My AC solution fails on following test
3
100
71 70
99 1
-71 70

It returns
YES
+-+

which means (71; 70) - (99; 1) + (-71; 70) = (-99; 139), |(-99; 139)|~170.65 > 141.4.

But it is really strange that my AC solution contains awful mistake in sorting. In fact, sort doesn't work at all in my AC solution and output depends on vectors order! I wonder how could this code pass all tests. And I wonder how the code with fixed sorting (but still incorrect) fails on 53-th test only.

Please add mentioned test.

Edited by author 21.12.2015 22:48

Your test was added