Thanks for checking. SPOJ uses SBCL 1.0.18 so that might be a bit of an issue, since it seems to be a couple of years old. I was thinking that the input routin

Thanks for checking. SPOJ uses SBCL 1.0.18 so that might be a bit of an issue, since it seems to be a couple of years old. I was thinking that the input routines might have been a bit of a problem and that CL isn't optmized as much for that type of processing. Maybe something to look into in SBCL code base for improvement.