Yes, I could've done that, but my code from C-large-1 already use sqrt() on the bounds of the range and I never thought to change that. Since I was generating t

Yes, I could've done that, but my code from C-large-1 already use sqrt() on the bounds of the range and I never thought to change that. Since I was generating the roots instead of the full numbers it seemed natural to iterate over those. If I had thought there might be a problem with sqrt() I might've done that. However, it just never occurred to me. I just ran my C-large-2 solution against C-large-1 and got a correct answer so I assumed I hadn't made mistakes. I only found out about this after the competition was over. Oh well, this was just a qualification round anyway :)