note zing Hi there, As per your suggestion I added these two lines, but as you can see in the output section the results are totally invalid. <code> print "First connected component == $subgraphs[1]\n"; print "Number of connected components== $#subgraphs\n";</code> -----OUTPUT---------- <code> 5 ----connected components--------------- - - c - b - a - - e - d First connected component == ARRAY(0x9a8e308) Number of connected components== 1 </code> 996887 996888