The binaries are compiled for x64 ArchLinux using GCC. To compile them on your own Linux system you can use
$ gcc <file.c> -o <file> -lmand replace <file.c> and <file> with the name of the file containing the code.
Projects after pset01 have Makefiles and can be compiled with make.
You can then run the code with
./<file>ANSWERS.pdf contains the compiled LaTeX code for the assignment corresponding to the parent directory.