comment: Similar to test03, but completing the traversal
initialize: rebuild-offset = 10 bounding-box = [(0.0,0.0),(100.0,100.0)]
comment: Initializing farthest-First structure starting at ORD
ff-initialize(start = ORD): successful
ff-add-site(ATL): successful {Atlanta, (10.0,50.0)}
ff-add-site(JFK): successful {New York, (90.0,40.0)}
ff-add-site(BWI): successful {Baltimore, (80.0,80.0)}
ff-add-site(SEA): successful {Seattle, (50.0,51.0)}
ff-add-site(SFO): successful {San Francisco, (20.0,100.0)}
ff-add-site(DFW): successful {Dallas-Fort Worth, (30.0,79.0)}
ff-add-site(DCA): successful {Washington, (61.0,71.0)}
ff-add-site(LAX): successful {Los Angeles, (40.0,20.0)}
ff-add-site(IAD): successful {Dulles, (31.0,40.0)}
ff-add-site(PVD): successful {Providence, (90.0,20.0)}
ff-add-site(LAS): successful {Las Vegas, (10.0,20.0)}
ff-add-site(MCO): successful {Orlando, (61.0,30.0)}
ff-sites-size: 12
ff-traversal-size: 1
ff-list-kd:
  (x=50.0) 12:10 => {ORD}
  (y=50.0) 6:4 => {ORD}
  (x=75.0) 3:1 => {ORD}
  [BWI: (80.0,80.0)] => {ORD}
  (y=71.0) 2:0 => {ORD}
  [DCA: (61.0,71.0)] => {ORD}
  [SEA: (50.0,51.0)] => {ORD}
  (y=25.0) 3:1 => {ORD}
  (x=75.0) 2:0 => {ORD}
  [JFK: (90.0,40.0)] => {ORD}
  [MCO: (61.0,30.0)] => {ORD}
  [PVD: (90.0,20.0)] => {ORD}
  (y=50.0) 6:4 => {ORD}
  (x=20.0) 3:1 => {ORD}
  (y=79.0) 2:0 => {ORD}
  (x=30.0) 2:0 => {ORD}
  [DFW: (30.0,79.0)] => {ORD}
  [SFO: (20.0,100.0)] => {ORD}
  [null] => {ORD}
  [ATL: (10.0,50.0)] => {ORD}
  (x=31.0) 3:1 => {ORD}
  (y=25.0) 2:0 => {ORD}
  [IAD: (31.0,40.0)] => {ORD}
  [LAX: (40.0,20.0)] => {ORD}
  [LAS: (10.0,20.0)] => {ORD}
ff-list-kd [tree structure]:
  | | | [BWI: (80.0,80.0)] => {ORD}
  | | (x=75.0) 3:1 => {ORD}
  | | | | [DCA: (61.0,71.0)] => {ORD}
  | | | (y=71.0) 2:0 => {ORD}
  | | | | [SEA: (50.0,51.0)] => {ORD}
  | (y=50.0) 6:4 => {ORD}
  | | | | [JFK: (90.0,40.0)] => {ORD}
  | | | (x=75.0) 2:0 => {ORD}
  | | | | [MCO: (61.0,30.0)] => {ORD}
  | | (y=25.0) 3:1 => {ORD}
  | | | [PVD: (90.0,20.0)] => {ORD}
  (x=50.0) 12:10 => {ORD}
  | | | | | [DFW: (30.0,79.0)] => {ORD}
  | | | | (x=30.0) 2:0 => {ORD}
  | | | | | [SFO: (20.0,100.0)] => {ORD}
  | | | (y=79.0) 2:0 => {ORD}
  | | | | [null] => {ORD}
  | | (x=20.0) 3:1 => {ORD}
  | | | [ATL: (10.0,50.0)] => {ORD}
  | (y=50.0) 6:4 => {ORD}
  | | | | [IAD: (31.0,40.0)] => {ORD}
  | | | (y=25.0) 2:0 => {ORD}
  | | | | [LAX: (40.0,20.0)] => {ORD}
  | | (x=31.0) 3:1 => {ORD}
  | | | [LAS: (10.0,20.0)] => {ORD}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [DFW->ORD] distSq = 461.0
  [IAD->ORD] distSq = 521.0
  [SEA->ORD] distSq = 981.0
  [SFO->ORD] distSq = 1600.0
  [LAS->ORD] distSq = 1700.0
  [DCA->ORD] distSq = 1802.0
  [LAX->ORD] distSq = 2000.0
  [MCO->ORD] distSq = 2581.0
  [BWI->ORD] distSq = 4000.0
  [JFK->ORD] distSq = 5300.0
  [PVD->ORD] distSq = 6500.0
ff-extract-next: PVD
ff-sites-size: 11
ff-traversal-size: 2
ff-list-kd:
  (x=50.0) 11:10 => {ORD PVD}
  (y=50.0) 5:4 => {ORD PVD}
  (x=75.0) 3:1 => {ORD PVD}
  [BWI: (80.0,80.0)] => {ORD PVD}
  (y=71.0) 2:0 => {ORD PVD}
  [DCA: (61.0,71.0)] => {ORD PVD}
  [SEA: (50.0,51.0)] => {ORD PVD}
  (y=25.0) 2:1 => {ORD PVD}
  (x=75.0) 2:0 => {ORD PVD}
  [JFK: (90.0,40.0)] => {PVD}
  [MCO: (61.0,30.0)] => {ORD PVD}
  [null] => {PVD}
  (y=50.0) 6:4 => {ORD PVD}
  (x=20.0) 3:1 => {ORD PVD}
  (y=79.0) 2:0 => {ORD PVD}
  (x=30.0) 2:0 => {ORD}
  [DFW: (30.0,79.0)] => {ORD}
  [SFO: (20.0,100.0)] => {ORD}
  [null] => {ORD}
  [ATL: (10.0,50.0)] => {ORD}
  (x=31.0) 3:1 => {ORD PVD}
  (y=25.0) 2:0 => {ORD PVD}
  [IAD: (31.0,40.0)] => {ORD PVD}
  [LAX: (40.0,20.0)] => {ORD PVD}
  [LAS: (10.0,20.0)] => {ORD PVD}
ff-list-kd [tree structure]:
  | | | [BWI: (80.0,80.0)] => {ORD PVD}
  | | (x=75.0) 3:1 => {ORD PVD}
  | | | | [DCA: (61.0,71.0)] => {ORD PVD}
  | | | (y=71.0) 2:0 => {ORD PVD}
  | | | | [SEA: (50.0,51.0)] => {ORD PVD}
  | (y=50.0) 5:4 => {ORD PVD}
  | | | | [JFK: (90.0,40.0)] => {PVD}
  | | | (x=75.0) 2:0 => {ORD PVD}
  | | | | [MCO: (61.0,30.0)] => {ORD PVD}
  | | (y=25.0) 2:1 => {ORD PVD}
  | | | [null] => {PVD}
  (x=50.0) 11:10 => {ORD PVD}
  | | | | | [DFW: (30.0,79.0)] => {ORD}
  | | | | (x=30.0) 2:0 => {ORD}
  | | | | | [SFO: (20.0,100.0)] => {ORD}
  | | | (y=79.0) 2:0 => {ORD PVD}
  | | | | [null] => {ORD}
  | | (x=20.0) 3:1 => {ORD PVD}
  | | | [ATL: (10.0,50.0)] => {ORD}
  | (y=50.0) 6:4 => {ORD PVD}
  | | | | [IAD: (31.0,40.0)] => {ORD PVD}
  | | | (y=25.0) 2:0 => {ORD PVD}
  | | | | [LAX: (40.0,20.0)] => {ORD PVD}
  | | (x=31.0) 3:1 => {ORD PVD}
  | | | [LAS: (10.0,20.0)] => {ORD PVD}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DFW->ORD] distSq = 461.0
  [IAD->ORD] distSq = 521.0
  [MCO->PVD] distSq = 941.0
  [SEA->ORD] distSq = 981.0
  [SFO->ORD] distSq = 1600.0
  [LAS->ORD] distSq = 1700.0
  [DCA->ORD] distSq = 1802.0
  [LAX->ORD] distSq = 2000.0
  [BWI->PVD] distSq = 3700.0
ff-extract-next: BWI
ff-sites-size: 10
ff-traversal-size: 3
ff-list-kd:
  (x=50.0) 10:10 => {BWI ORD PVD}
  (y=50.0) 4:4 => {BWI ORD PVD}
  (x=75.0) 2:1 => {BWI ORD PVD}
  [null] => {BWI PVD}
  (y=71.0) 2:0 => {BWI ORD PVD}
  [DCA: (61.0,71.0)] => {BWI ORD}
  [SEA: (50.0,51.0)] => {BWI ORD PVD}
  (y=25.0) 2:1 => {BWI ORD PVD}
  (x=75.0) 2:0 => {BWI ORD PVD}
  [JFK: (90.0,40.0)] => {BWI PVD}
  [MCO: (61.0,30.0)] => {BWI ORD PVD}
  [null] => {PVD}
  (y=50.0) 6:4 => {BWI ORD PVD}
  (x=20.0) 3:1 => {BWI ORD PVD}
  (y=79.0) 2:0 => {BWI ORD PVD}
  (x=30.0) 2:0 => {BWI ORD}
  [DFW: (30.0,79.0)] => {BWI ORD}
  [SFO: (20.0,100.0)] => {ORD}
  [null] => {BWI ORD}
  [ATL: (10.0,50.0)] => {ORD}
  (x=31.0) 3:1 => {BWI ORD PVD}
  (y=25.0) 2:0 => {BWI ORD PVD}
  [IAD: (31.0,40.0)] => {BWI ORD PVD}
  [LAX: (40.0,20.0)] => {ORD PVD}
  [LAS: (10.0,20.0)] => {BWI ORD PVD}
ff-list-kd [tree structure]:
  | | | [null] => {BWI PVD}
  | | (x=75.0) 2:1 => {BWI ORD PVD}
  | | | | [DCA: (61.0,71.0)] => {BWI ORD}
  | | | (y=71.0) 2:0 => {BWI ORD PVD}
  | | | | [SEA: (50.0,51.0)] => {BWI ORD PVD}
  | (y=50.0) 4:4 => {BWI ORD PVD}
  | | | | [JFK: (90.0,40.0)] => {BWI PVD}
  | | | (x=75.0) 2:0 => {BWI ORD PVD}
  | | | | [MCO: (61.0,30.0)] => {BWI ORD PVD}
  | | (y=25.0) 2:1 => {BWI ORD PVD}
  | | | [null] => {PVD}
  (x=50.0) 10:10 => {BWI ORD PVD}
  | | | | | [DFW: (30.0,79.0)] => {BWI ORD}
  | | | | (x=30.0) 2:0 => {BWI ORD}
  | | | | | [SFO: (20.0,100.0)] => {ORD}
  | | | (y=79.0) 2:0 => {BWI ORD PVD}
  | | | | [null] => {BWI ORD}
  | | (x=20.0) 3:1 => {BWI ORD PVD}
  | | | [ATL: (10.0,50.0)] => {ORD}
  | (y=50.0) 6:4 => {BWI ORD PVD}
  | | | | [IAD: (31.0,40.0)] => {BWI ORD PVD}
  | | | (y=25.0) 2:0 => {BWI ORD PVD}
  | | | | [LAX: (40.0,20.0)] => {ORD PVD}
  | | (x=31.0) 3:1 => {BWI ORD PVD}
  | | | [LAS: (10.0,20.0)] => {BWI ORD PVD}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->ORD] distSq = 521.0
  [MCO->PVD] distSq = 941.0
  [SEA->ORD] distSq = 981.0
  [SFO->ORD] distSq = 1600.0
  [LAS->ORD] distSq = 1700.0
  [LAX->ORD] distSq = 2000.0
ff-extract-next: LAX
ff-sites-size: 9
ff-traversal-size: 4
ff-list-kd:
  (x=50.0) 9:10 => {BWI LAX ORD PVD}
  (y=50.0) 4:4 => {BWI LAX ORD PVD}
  (x=75.0) 2:1 => {BWI LAX ORD PVD}
  [null] => {BWI PVD}
  (y=71.0) 2:0 => {BWI LAX ORD PVD}
  [DCA: (61.0,71.0)] => {BWI ORD}
  [SEA: (50.0,51.0)] => {BWI LAX ORD PVD}
  (y=25.0) 2:1 => {BWI LAX ORD PVD}
  (x=75.0) 2:0 => {BWI LAX ORD PVD}
  [JFK: (90.0,40.0)] => {BWI PVD}
  [MCO: (61.0,30.0)] => {BWI LAX ORD PVD}
  [null] => {LAX PVD}
  (y=50.0) 5:4 => {BWI LAX ORD PVD}
  (x=20.0) 3:1 => {BWI LAX ORD PVD}
  (y=79.0) 2:0 => {BWI LAX ORD PVD}
  (x=30.0) 2:0 => {BWI ORD}
  [DFW: (30.0,79.0)] => {BWI ORD}
  [SFO: (20.0,100.0)] => {ORD}
  [null] => {BWI LAX ORD}
  [ATL: (10.0,50.0)] => {LAX ORD}
  (x=31.0) 2:1 => {BWI LAX ORD PVD}
  (y=25.0) 1:0 => {LAX ORD}
  [IAD: (31.0,40.0)] => {LAX ORD}
  [null] => {LAX}
  [LAS: (10.0,20.0)] => {LAX ORD}
ff-list-kd [tree structure]:
  | | | [null] => {BWI PVD}
  | | (x=75.0) 2:1 => {BWI LAX ORD PVD}
  | | | | [DCA: (61.0,71.0)] => {BWI ORD}
  | | | (y=71.0) 2:0 => {BWI LAX ORD PVD}
  | | | | [SEA: (50.0,51.0)] => {BWI LAX ORD PVD}
  | (y=50.0) 4:4 => {BWI LAX ORD PVD}
  | | | | [JFK: (90.0,40.0)] => {BWI PVD}
  | | | (x=75.0) 2:0 => {BWI LAX ORD PVD}
  | | | | [MCO: (61.0,30.0)] => {BWI LAX ORD PVD}
  | | (y=25.0) 2:1 => {BWI LAX ORD PVD}
  | | | [null] => {LAX PVD}
  (x=50.0) 9:10 => {BWI LAX ORD PVD}
  | | | | | [DFW: (30.0,79.0)] => {BWI ORD}
  | | | | (x=30.0) 2:0 => {BWI ORD}
  | | | | | [SFO: (20.0,100.0)] => {ORD}
  | | | (y=79.0) 2:0 => {BWI LAX ORD PVD}
  | | | | [null] => {BWI LAX ORD}
  | | (x=20.0) 3:1 => {BWI LAX ORD PVD}
  | | | [ATL: (10.0,50.0)] => {LAX ORD}
  | (y=50.0) 5:4 => {BWI LAX ORD PVD}
  | | | | [IAD: (31.0,40.0)] => {LAX ORD}
  | | | (y=25.0) 1:0 => {LAX ORD}
  | | | | [null] => {LAX}
  | | (x=31.0) 2:1 => {BWI LAX ORD PVD}
  | | | [LAS: (10.0,20.0)] => {LAX ORD}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->LAX] distSq = 481.0
  [MCO->LAX] distSq = 541.0
  [LAS->LAX] distSq = 900.0
  [SEA->ORD] distSq = 981.0
  [SFO->ORD] distSq = 1600.0
ff-extract-next: SFO
ff-sites-size: 8
ff-traversal-size: 5
ff-list-kd:
  (x=50.0) 8:10 => {BWI LAX ORD PVD SFO}
  (y=50.0) 4:4 => {BWI LAX ORD PVD SFO}
  (x=75.0) 2:1 => {BWI LAX ORD PVD SFO}
  [null] => {BWI PVD}
  (y=71.0) 2:0 => {BWI LAX ORD PVD SFO}
  [DCA: (61.0,71.0)] => {BWI ORD SFO}
  [SEA: (50.0,51.0)] => {BWI LAX ORD PVD SFO}
  (y=25.0) 2:1 => {BWI LAX ORD PVD}
  (x=75.0) 2:0 => {BWI LAX ORD PVD}
  [JFK: (90.0,40.0)] => {BWI PVD}
  [MCO: (61.0,30.0)] => {BWI LAX ORD PVD}
  [null] => {LAX PVD}
  (y=50.0) 4:4 => {BWI LAX ORD PVD SFO}
  (x=20.0) 2:1 => {BWI LAX ORD PVD SFO}
  (y=79.0) 1:0 => {BWI LAX ORD PVD SFO}
  (x=30.0) 1:0 => {BWI ORD SFO}
  [DFW: (30.0,79.0)] => {BWI ORD SFO}
  [null] => {ORD SFO}
  [null] => {BWI LAX ORD SFO}
  [ATL: (10.0,50.0)] => {LAX ORD SFO}
  (x=31.0) 2:1 => {BWI LAX ORD PVD SFO}
  (y=25.0) 1:0 => {LAX ORD}
  [IAD: (31.0,40.0)] => {LAX ORD}
  [null] => {LAX}
  [LAS: (10.0,20.0)] => {LAX ORD SFO}
ff-list-kd [tree structure]:
  | | | [null] => {BWI PVD}
  | | (x=75.0) 2:1 => {BWI LAX ORD PVD SFO}
  | | | | [DCA: (61.0,71.0)] => {BWI ORD SFO}
  | | | (y=71.0) 2:0 => {BWI LAX ORD PVD SFO}
  | | | | [SEA: (50.0,51.0)] => {BWI LAX ORD PVD SFO}
  | (y=50.0) 4:4 => {BWI LAX ORD PVD SFO}
  | | | | [JFK: (90.0,40.0)] => {BWI PVD}
  | | | (x=75.0) 2:0 => {BWI LAX ORD PVD}
  | | | | [MCO: (61.0,30.0)] => {BWI LAX ORD PVD}
  | | (y=25.0) 2:1 => {BWI LAX ORD PVD}
  | | | [null] => {LAX PVD}
  (x=50.0) 8:10 => {BWI LAX ORD PVD SFO}
  | | | | | [DFW: (30.0,79.0)] => {BWI ORD SFO}
  | | | | (x=30.0) 1:0 => {BWI ORD SFO}
  | | | | | [null] => {ORD SFO}
  | | | (y=79.0) 1:0 => {BWI LAX ORD PVD SFO}
  | | | | [null] => {BWI LAX ORD SFO}
  | | (x=20.0) 2:1 => {BWI LAX ORD PVD SFO}
  | | | [ATL: (10.0,50.0)] => {LAX ORD SFO}
  | (y=50.0) 4:4 => {BWI LAX ORD PVD SFO}
  | | | | [IAD: (31.0,40.0)] => {LAX ORD}
  | | | (y=25.0) 1:0 => {LAX ORD}
  | | | | [null] => {LAX}
  | | (x=31.0) 2:1 => {BWI LAX ORD PVD SFO}
  | | | [LAS: (10.0,20.0)] => {LAX ORD SFO}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->LAX] distSq = 481.0
  [MCO->LAX] distSq = 541.0
  [LAS->LAX] distSq = 900.0
  [SEA->ORD] distSq = 981.0
ff-extract-next: SEA
ff-sites-size: 7
ff-traversal-size: 6
ff-list-kd:
  (x=50.0) 7:10 => {BWI LAX ORD PVD SEA SFO}
  (y=50.0) 3:4 => {BWI LAX ORD PVD SEA SFO}
  (x=75.0) 1:1 => {BWI LAX ORD PVD SEA SFO}
  [null] => {BWI PVD SEA}
  (y=71.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  [DCA: (61.0,71.0)] => {BWI ORD SEA SFO}
  [null] => {BWI LAX ORD SEA}
  (y=25.0) 2:1 => {BWI LAX ORD PVD SEA}
  (x=75.0) 2:0 => {BWI LAX ORD PVD SEA}
  [JFK: (90.0,40.0)] => {BWI PVD SEA}
  [MCO: (61.0,30.0)] => {BWI LAX ORD PVD SEA}
  [null] => {LAX PVD SEA}
  (y=50.0) 4:4 => {BWI LAX ORD PVD SEA SFO}
  (x=20.0) 2:1 => {BWI LAX ORD PVD SEA SFO}
  (y=79.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  (x=30.0) 1:0 => {BWI ORD SEA SFO}
  [DFW: (30.0,79.0)] => {BWI ORD SEA SFO}
  [null] => {ORD SFO}
  [null] => {BWI LAX ORD SEA SFO}
  [ATL: (10.0,50.0)] => {LAX ORD SEA SFO}
  (x=31.0) 2:1 => {BWI LAX ORD PVD SEA SFO}
  (y=25.0) 1:0 => {LAX ORD SEA}
  [IAD: (31.0,40.0)] => {LAX ORD SEA}
  [null] => {LAX}
  [LAS: (10.0,20.0)] => {LAX ORD SEA SFO}
ff-list-kd [tree structure]:
  | | | [null] => {BWI PVD SEA}
  | | (x=75.0) 1:1 => {BWI LAX ORD PVD SEA SFO}
  | | | | [DCA: (61.0,71.0)] => {BWI ORD SEA SFO}
  | | | (y=71.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  | | | | [null] => {BWI LAX ORD SEA}
  | (y=50.0) 3:4 => {BWI LAX ORD PVD SEA SFO}
  | | | | [JFK: (90.0,40.0)] => {BWI PVD SEA}
  | | | (x=75.0) 2:0 => {BWI LAX ORD PVD SEA}
  | | | | [MCO: (61.0,30.0)] => {BWI LAX ORD PVD SEA}
  | | (y=25.0) 2:1 => {BWI LAX ORD PVD SEA}
  | | | [null] => {LAX PVD SEA}
  (x=50.0) 7:10 => {BWI LAX ORD PVD SEA SFO}
  | | | | | [DFW: (30.0,79.0)] => {BWI ORD SEA SFO}
  | | | | (x=30.0) 1:0 => {BWI ORD SEA SFO}
  | | | | | [null] => {ORD SFO}
  | | | (y=79.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  | | | | [null] => {BWI LAX ORD SEA SFO}
  | | (x=20.0) 2:1 => {BWI LAX ORD PVD SEA SFO}
  | | | [ATL: (10.0,50.0)] => {LAX ORD SEA SFO}
  | (y=50.0) 4:4 => {BWI LAX ORD PVD SEA SFO}
  | | | | [IAD: (31.0,40.0)] => {LAX ORD SEA}
  | | | (y=25.0) 1:0 => {LAX ORD SEA}
  | | | | [null] => {LAX}
  | | (x=31.0) 2:1 => {BWI LAX ORD PVD SEA SFO}
  | | | [LAS: (10.0,20.0)] => {LAX ORD SEA SFO}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->LAX] distSq = 481.0
  [MCO->LAX] distSq = 541.0
  [LAS->LAX] distSq = 900.0
ff-extract-next: LAS
ff-sites-size: 6
ff-traversal-size: 7
ff-list-kd:
  (x=50.0) 6:10 => {BWI LAS LAX ORD PVD SEA SFO}
  (y=50.0) 3:4 => {BWI LAS LAX ORD PVD SEA SFO}
  (x=75.0) 1:1 => {BWI LAX ORD PVD SEA SFO}
  [null] => {BWI PVD SEA}
  (y=71.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  [DCA: (61.0,71.0)] => {BWI ORD SEA SFO}
  [null] => {BWI LAX ORD SEA}
  (y=25.0) 2:1 => {BWI LAS LAX ORD PVD SEA}
  (x=75.0) 2:0 => {BWI LAS LAX ORD PVD SEA}
  [JFK: (90.0,40.0)] => {BWI PVD SEA}
  [MCO: (61.0,30.0)] => {BWI LAX ORD PVD SEA}
  [null] => {LAS LAX PVD SEA}
  (y=50.0) 3:4 => {BWI LAS LAX ORD PVD SEA SFO}
  (x=20.0) 2:1 => {BWI LAS LAX ORD PVD SEA SFO}
  (y=79.0) 1:0 => {BWI LAS LAX ORD PVD SEA SFO}
  (x=30.0) 1:0 => {BWI ORD SEA SFO}
  [DFW: (30.0,79.0)] => {BWI ORD SEA SFO}
  [null] => {ORD SFO}
  [null] => {BWI LAS LAX ORD SEA SFO}
  [ATL: (10.0,50.0)] => {LAS LAX ORD SEA SFO}
  (x=31.0) 1:1 => {BWI LAS LAX ORD PVD SEA SFO}
  (y=25.0) 1:0 => {LAS LAX ORD SEA}
  [IAD: (31.0,40.0)] => {LAS LAX ORD SEA}
  [null] => {LAS LAX}
  [null] => {LAS LAX ORD SEA}
ff-list-kd [tree structure]:
  | | | [null] => {BWI PVD SEA}
  | | (x=75.0) 1:1 => {BWI LAX ORD PVD SEA SFO}
  | | | | [DCA: (61.0,71.0)] => {BWI ORD SEA SFO}
  | | | (y=71.0) 1:0 => {BWI LAX ORD PVD SEA SFO}
  | | | | [null] => {BWI LAX ORD SEA}
  | (y=50.0) 3:4 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | | [JFK: (90.0,40.0)] => {BWI PVD SEA}
  | | | (x=75.0) 2:0 => {BWI LAS LAX ORD PVD SEA}
  | | | | [MCO: (61.0,30.0)] => {BWI LAX ORD PVD SEA}
  | | (y=25.0) 2:1 => {BWI LAS LAX ORD PVD SEA}
  | | | [null] => {LAS LAX PVD SEA}
  (x=50.0) 6:10 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | | | [DFW: (30.0,79.0)] => {BWI ORD SEA SFO}
  | | | | (x=30.0) 1:0 => {BWI ORD SEA SFO}
  | | | | | [null] => {ORD SFO}
  | | | (y=79.0) 1:0 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | | [null] => {BWI LAS LAX ORD SEA SFO}
  | | (x=20.0) 2:1 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | [ATL: (10.0,50.0)] => {LAS LAX ORD SEA SFO}
  | (y=50.0) 3:4 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | | [IAD: (31.0,40.0)] => {LAS LAX ORD SEA}
  | | | (y=25.0) 1:0 => {LAS LAX ORD SEA}
  | | | | [null] => {LAS LAX}
  | | (x=31.0) 1:1 => {BWI LAS LAX ORD PVD SEA SFO}
  | | | [null] => {LAS LAX ORD SEA}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->LAX] distSq = 481.0
  [MCO->LAX] distSq = 541.0
ff-extract-next: MCO
ff-sites-size: 5
ff-traversal-size: 8
ff-list-kd:
  (x=50.0) 5:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  (y=50.0) 2:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  [DCA: (61.0,71.0)] => {BWI LAX MCO ORD PVD SEA SFO}
  [JFK: (90.0,40.0)] => {BWI LAS LAX MCO ORD PVD SEA}
  (y=50.0) 3:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  (x=25.0) 2:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  [DFW: (30.0,79.0)] => {BWI LAS LAX MCO ORD PVD SEA SFO}
  [ATL: (10.0,50.0)] => {LAS LAX MCO ORD SEA SFO}
  [IAD: (31.0,40.0)] => {BWI LAS LAX MCO ORD PVD SEA SFO}
ff-list-kd [tree structure]:
  | | [DCA: (61.0,71.0)] => {BWI LAX MCO ORD PVD SEA SFO}
  | (y=50.0) 2:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  | | [JFK: (90.0,40.0)] => {BWI LAS LAX MCO ORD PVD SEA}
  (x=50.0) 5:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  | | | [DFW: (30.0,79.0)] => {BWI LAS LAX MCO ORD PVD SEA SFO}
  | | (x=25.0) 2:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  | | | [ATL: (10.0,50.0)] => {LAS LAX MCO ORD SEA SFO}
  | (y=50.0) 3:0 => {BWI LAS LAX MCO ORD PVD SEA SFO}
  | | [IAD: (31.0,40.0)] => {BWI LAS LAX MCO ORD PVD SEA SFO}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
  [IAD->LAX] distSq = 481.0
ff-extract-next: IAD
ff-sites-size: 4
ff-traversal-size: 9
ff-list-kd:
  (x=50.0) 4:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  (y=50.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  [DCA: (61.0,71.0)] => {BWI IAD LAX MCO ORD PVD SEA SFO}
  [JFK: (90.0,40.0)] => {BWI IAD LAS LAX MCO ORD PVD SEA}
  (y=50.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  (x=25.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  [DFW: (30.0,79.0)] => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  [ATL: (10.0,50.0)] => {IAD LAS LAX MCO ORD SEA SFO}
  [null] => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
ff-list-kd [tree structure]:
  | | [DCA: (61.0,71.0)] => {BWI IAD LAX MCO ORD PVD SEA SFO}
  | (y=50.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  | | [JFK: (90.0,40.0)] => {BWI IAD LAS LAX MCO ORD PVD SEA}
  (x=50.0) 4:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  | | | [DFW: (30.0,79.0)] => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  | | (x=25.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  | | | [ATL: (10.0,50.0)] => {IAD LAS LAX MCO ORD SEA SFO}
  | (y=50.0) 2:0 => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
  | | [null] => {BWI IAD LAS LAX MCO ORD PVD SEA SFO}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
  [DFW->ORD] distSq = 461.0
ff-extract-next: DFW
ff-sites-size: 3
ff-traversal-size: 10
ff-list-kd:
  (x=50.0) 3:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  (y=50.0) 2:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  [DCA: (61.0,71.0)] => {BWI DFW IAD LAX MCO ORD PVD SEA SFO}
  [JFK: (90.0,40.0)] => {BWI DFW IAD LAS LAX MCO ORD PVD SEA}
  (y=50.0) 1:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  (x=25.0) 1:0 => {BWI DFW IAD LAS LAX MCO ORD SEA SFO}
  [null] => {BWI DFW IAD LAS LAX MCO ORD SEA SFO}
  [ATL: (10.0,50.0)] => {DFW IAD LAS LAX MCO ORD SEA SFO}
  [null] => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
ff-list-kd [tree structure]:
  | | [DCA: (61.0,71.0)] => {BWI DFW IAD LAX MCO ORD PVD SEA SFO}
  | (y=50.0) 2:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  | | [JFK: (90.0,40.0)] => {BWI DFW IAD LAS LAX MCO ORD PVD SEA}
  (x=50.0) 3:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  | | | [null] => {BWI DFW IAD LAS LAX MCO ORD SEA SFO}
  | | (x=25.0) 1:0 => {BWI DFW IAD LAS LAX MCO ORD SEA SFO}
  | | | [ATL: (10.0,50.0)] => {DFW IAD LAS LAX MCO ORD SEA SFO}
  | (y=50.0) 1:0 => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
  | | [null] => {BWI DFW IAD LAS LAX MCO ORD PVD SEA SFO}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
  [DCA->BWI] distSq = 442.0
ff-extract-next: DCA
ff-sites-size: 2
ff-traversal-size: 11
ff-list-kd:
  (x=50.0) 2:0 => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
  [JFK: (90.0,40.0)] => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
  [ATL: (10.0,50.0)] => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
ff-list-kd [tree structure]:
  | [JFK: (90.0,40.0)] => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
  (x=50.0) 2:0 => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
  | [ATL: (10.0,50.0)] => {BWI DCA DFW IAD LAS LAX MCO ORD PVD SEA...}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
  [JFK->PVD] distSq = 400.0
ff-extract-next: JFK
ff-sites-size: 1
ff-traversal-size: 12
ff-list-kd:
  (x=50.0) 1:0 => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
  [null] => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
  [ATL: (10.0,50.0)] => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
ff-list-kd [tree structure]:
  | [null] => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
  (x=50.0) 1:0 => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
  | [ATL: (10.0,50.0)] => {BWI DCA DFW IAD JFK LAS LAX MCO ORD PVD...}
ff-list-assignments:
  [ATL->ORD] distSq = 200.0
ff-extract-next: ATL
ff-sites-size: 0
ff-traversal-size: 13
ff-list-kd:
  [null] => {ATL BWI DCA DFW IAD JFK LAS LAX MCO ORD...}
ff-list-kd [tree structure]:
  [null] => {ATL BWI DCA DFW IAD JFK LAS LAX MCO ORD...}
ff-list-assignments:
list-traversal:
    ORD PVD BWI LAX SFO SEA LAS MCO IAD DFW DCA JFK ATL
