Route #1: 21 11 28 3 31 24 39 14 45 4
Route #2: 2 48 9 16 46 13 26
Route #3: 47 51 7 43 35 33
Route #4: 44 10 5 8 27 29 37
Route #5: 40 42 20 30 18 1 36
Route #6: 25 6 41
Route #7: 23 12 50 22 17 49 15 19 34 32 38
cost 747