Route #1: 26 21 72 75 39 67 23 56 4 55 25 54 24 80 12 
Route #2: 27 69 1 76 3 79 78 81 9 66 71 35 34 29 68 77 28 
Route #3: 50 33 51 65 20 30 32 90 63 64 49 10 70 31 52 
Route #4: 53 40 58 
Route #5: 89 18 45 46 36 47 48 19 11 62 88 7 82 8 83 60 5 84 17 61 91 100 37 98 93 59 94 
Route #6: 95 92 97 42 15 43 14 44 38 86 16 85 99 96 6 87 57 41 22 74 73 2 13 
Cost 870.8