@cantanima: see the [readme](https://github.com/frol/completely-unscientific-benchmarks/tree/master/nim) for the instructions how to compile.
On my machine, if I use `nim c -d:release main_fast.nim` I get 0.42 seconds, but if I use what it is recommended (`nim compile -d:release --passC:-flto --passL:-s --gc:markAndSweep --out:main-nim main_fast.nim`), it runs in 0.18 seconds.
