To build the executable, simply use the following command in the main directory.

make

This will create the executable run in the main directory. The input file 15_puzzles.txt should be placed in the same directory as run. After placing the input file, run the following command to run the algorithm.

./run

After running, the output file output.txt will be created in the same directory as the run executable.

To clean up the build as well as the run output, simple use make clean.