instance:eil26.tsp m:5 alpha:0.250000 Q=2 nU:6 nW:19 lb:193.000000 ub:193.000000 5 0 1 2.00 0 5 2.00 0 7 2.00 0 11 2.00 0 21 2.00 4 2 21 1.00 3 11 1.00 4 11 1.00 6 7 1.00 193.000000