===========================
Generation #20
problem size = 100 -> 50
Heuristic #10, from m1):
objective = 19.99802, time = 0.2 s

problem size = 100 -> 100
Heuristic #10, from m1):
objective = 40.23577, time = 0.6 s

problem size = 100 -> 200
Heuristic #10, from m1):
objective = 57.40639, time = 2.0 s

