instance:eil26.tsp m:3 alpha:0.250000 Q=3 nU:6 nW:19 lb:146.833333 ub:159.000000 5 0 5 1.000000 0 7 2.000000 0 11 1.000000 0 21 2.000000 5 11 1.000000 5 1 21 1.000000 2 21 1.000000 3 11 1.000000 4 11 1.000000 6 7 1.000000 159.000000