Most of them don't require lengthy computation, but some of them did for me. I know at least some of the time that's because I didn't know enough math, but some

Most of them don't require lengthy computation, but some of them did for me. I know at least some of the time that's because I didn't know enough math, but sometimes I had the same algorithm as the other people in the solution thread but with much slower runtimes. I think numpy gives a bigger speedup than PyPy for a lot of the problems.