===========================
Generation #20
problem size = 50 -> 50
Heuristic #5, from e2):
objective = -5.76664, time = 140.0 s

problem size = 50 -> 100
Heuristic #5, from e2):
objective = -8.00644, time = 1078.6 s

problem size = 50 -> 200
Heuristic #5, from e2):
objective = -11.16358, time = 8346.6 s

