===========================
Generation #20
problem size = 100 -> 50
Heuristic #7, from m1):
objective = 19.99961, time = 1.0 s

problem size = 100 -> 100
Heuristic #7, from m1):
objective = 40.23691, time = 7.1 s

problem size = 100 -> 200
Heuristic #7, from m1):
objective = 57.40624, time = 23.4 s

