BLACKSITE


	: 216.73.216.249
	: 157.173.108.86 / pdclassessgnr.in
	: Linux server.madnetech.com 4.18.0-553.117.1.el8_10.x86_64 #1 SMP Sun Apr 5 23:14:32 EDT 2026 x86_64

: /usr/share/graphviz/gvpr/

files >> //usr/share/graphviz/gvpr/bipart

 /* Determine if a graph is bipartite or not.
 */
BEG_G{
  int vc, c, color[node_t];
  node_t v;
  edge_t e;
  $tvtype = TV_dfs;
  $tvroot = fstnode($);
}
N{
  if ($tvedge == NULL)
    color[$] = 1;
  if (color[$] == 1)
    c = 2;
  else
    c = 1;
  for (e = fstedge($); e; e = nxtedge(e,$)) {
    v = opp(e,$);
    vc = color[v];
    if (vc == 0)
      color[v] = c;
    else if (vc != c) {
      printf(2, "Not bipartite\n");
      exit(1);
    }
  }
}