It is written in C and simple to modifiy and use.
How to install, Windows,
download the binary executable and run it, preferable add it to the environment PATH so it can be run without its full path.
Linux, there is no binary for linux,
but it can be built on it and it is simple (GCC).
You will need to download the files and a C compiler,
afterwards go into the 'Folder' and type
gcc powers.c -o powers.elf # to run it ./powers.elf