58     class Vtx  class in GCGraph
61         Vtx *next; // initialized and used in maxFlow() only
77     std::vector<Vtx> vtcs;
107     Vtx v;  in addVtx()
108     memset( &v, 0, sizeof(Vtx));  in addVtx()
156     Vtx stub, *nilNode = &stub, *first = nilNode, *last = nilNode;  in maxFlow()
159     Vtx *vtxPtr = &vtcs[0];  in maxFlow()
162     std::vector<Vtx*> orphans;  in maxFlow()
167         Vtx* v = vtxPtr + i;  in maxFlow()
186         Vtx* v, *u;  in maxFlow()
293             Vtx* v2 = orphans.back();  in maxFlow()