bays29 -39, ftv33 -204, ftv35 -127
select_random_from_bests bays29 -65, ftv33 -174, ftv35 -162
ry48p -1404, berlin52 -391, ftv55 -272, eil76 -65
ftv33 -136, ftv35 -210, ftv44 -366
require_all
move constants to module and make inheritance