Solved 21 elegantly.
22 wip.
Solved 22.
Optimized C is even faster.
Solved 23,24,25 in C.
Solved 23, 25, 26 in ocaml.
PSieve refactoring.
Solved 27.
Solved 28.
Added Numbers module. Extended toplevel.
Extended Bitarray.
Stop toplevel script if compilation fails.
Little optimization in P29.
Comment
Ignore toplevel.
Added Numbers.pow.
Solved 30.
31.