model:max=9*t1*w+9*t1*x+9*t1*z+9*y1+15*t2*w+15*t2*x+15*t2*z+15*y2-6*w-16*x-10*y1-10*y2-15*z;0.005*t1*w-0.015*t1*x-0.015*t1*z-0.025*y1200;z0;x>0;y1>0;y2>0;z>0;end
