1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
from,to,weight,type 0,1,1, 0,2,1, 1,0,1, 1,2,1,road 2,0,1, 2,1,1, 2,3,1,rail 3,2,1, 3,4,1, 3,5,1, 4,3,1, 4,5,1, 5,3,1, 5,4,1, 6,7,1, 6,8,1, 7,6,1, 7,8,1, 8,6,1, 8,7,1, 8,9,1, 9,8,1,