a280
berlin52
bier127
brd14051
ch130
ch150
d1291
d2103
d493
d657
eil101
eil51
eil76
fl3795
fl417
fnl4461
gil262
kroA100
kroA150
kroA200
linhp318
nrw1379
p654
pcb1173
pcb3038
pcb442
pr1002
pr107
pr124
rl1889
rl5915
rl5934
st70
ts225
tsp225
u1060
u2319
u574
u724
usa13509
vm1084
vm1748