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       #                                 INFO                                  #  \n \
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       #  With this code I produce a text file describing a directed graph.    #  \n \
       #  The format of the text file is the following:                        #  \n \
       #                                                                       #  \n \
       #  INT   INT   DOUBLE                                                   #  \n \
       #  ------------------                                                   #  \n \
       #  nodeA_ID nodeB_ID cost                                               #  \n \
       #                                                                       #  \n \
       #  so each line represents a directed edge from nodeA to nodeB for      #  \n \
       #  which we have a given cost that is positive.                         #  \n \
       #                                                                       #  \n \
       #  HOWTO run                                                            #  \n \
       #  =====================                                                #  \n \
       #  ./createGraph -n <totNodes> -fs <maxForwardStar> -o <outputFile>     #  \n \
       #                                                                       #  \n \
       #  where :                                                              #  \n \
       #  ---> -n specifies the total number of nodes of the graph             #  \n \
       #  ---> -fs specifies the maximum number of edges outgoing a node       #  \n \
       #  ---> -o indicates the output file where the graph will be saved      #  \n \
       #                                                                       #  \n \
       #  HOWTO build                                                          #  \n \
       #  =====================                                                #  \n \
       #  g++ -O3 createGraph.cpp -o createGraph                               #  \n \
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