3
7
NewNewYork 4
airport 1   museum 3
museum  2   zoo 4  park 5
zoo     1   park 3
park    0
6
Miami 3
airport 2   swamp 7  beach 10
swamp   0
beach   1   swamp 5
15
Rolla 5
airport 2   lake 5  forest 8
lake    1   forest 7
forest  2   river 6  bar 9
river   1   bar 7
bar     0