Nzec bsmath2

[lancs]

Is the input data for this problem clean?
I can't figure out why I'm getting NZEC.
My code runs OK on ideone and I have tried various inputs that i thought might cause problems.
Judging by the low number of successful submissions I think that there is little chance of success
for me but If anybody has any tricky inputs to share, I would appreciate it.

[numerix]

As you can see I solved the problem 3 years ago using Python 2.5 with psyco.
I did nothing special to read the input, just standard.

I resubmitted my former AC code today - without psyco, of course - and got a NZEC.
I didn't figure out the reason for that. It might be a slight difference between Python 2.5 and 2.7 or corrupt input data.
Another thing: I'm not sure it will be possible to get AC within the timelimit without psyco. But I didn't try.

[lancs]

Thanks for doing that. I'll leave it for now.