*  NLP written by GAMS Convert at 03/28/07 20:22:51
*  
*  Equation counts
*      Total        E        G        L        N        X        C
*          6        6        0        0        0        0        0
*  
*  Variable counts
*                   x        b        i      s1s      s2s       sc       si
*      Total     cont   binary  integer     sos1     sos2    scont     sint
*          8        8        0        0        0        0        0        0
*  FX      0        0        0        0        0        0        0        0
*  
*  Nonzero counts
*      Total    const       NL      DLL
*         43       43        0        0
*
*  Solve m using NLP maximizing objvar;


Variables  x1,x2,x3,x4,x5,x6,x7,objvar;

Positive Variables  x1,x2,x3,x4,x5,x6,x7;

Equations  e1,e2,e3,e4,e5,e6;


e1..    x1 - x2 + x3 - x4 - x5 - x6 + x7 =E= 0;

e2..  - x1 + x2 - x3 + x4 + x5 - x6 + x7 =E= 0;

e3..    x1 - x2 + x3 - x4 - x5 + x6 + x7 =E= 0;

e4..  - x1 + x2 - x3 + x4 + x5 + x6 - x7 =E= 0;

e5..    x1 - x2 + x3 - x4 - x5 + x6 - x7 =E= 0;

e6..  - 2*x1 - x2 - 2*x3 - x4 - x5 - 2*x6 - x7 + objvar =E= 0;

* set non default bounds

x1.up = 20; 
x2.up = 25; 
x3.up = 25; 
x4.up = 25; 
x5.up = 25; 
x6.up = 25; 
x7.up = 25; 

* set non default levels


* set non default marginals


Model m / all /;

m.limrow=0; m.limcol=0;

$if NOT '%gams.u1%' == '' $include %gams.u1%

Solve m using NLP maximizing objvar;