c d=2 path done, nodes 22
c d=3 path done, nodes 31
c d=3 cycle done, nodes 31
c d=4 path done, nodes 88
c d=4 cycle done, nodes 98
c d=5 path done, nodes 195
c d=5 cycle done, nodes 205
maxdeg: search nodes 670
  used vertices 6: surfaces with boundary 88 (max dual diameter 3), closed 7 (max 3); with diam >= nv-2: 0 (max diam among orientable ones: with boundary -1, closed -1)
