Results: 
status of optimization problem = optimal
solving time = 0.01
objective = 660
fxchg_pos= 210
linear component of objective:
   450

linear equality:
   50.0000   30.0000   60.0000   40.0000

residual of linear equality = -2.13163e-014
optimal point = 
   90.0000   50.0000         0   40.0000   40.0000   60.0000         0         0