Solving the great Monopoles problem using Depth-First Search
SOURCE: https://www.drdobbs.com/monopoles/184411053
Say "python3 monodfs.py --help" for program arguments
NOTE : You have to pass exactly two arguments in command-line.
~$> python3 monodfs.py 5 3
~$> python3 monodfs.py
~$> python3 monodfs.py 5
~$> python3 monodfs.py 5 3 4