[Help-glpk] Using optimal solution in another LP model

[Shaghayegh Mokarami]

Hi

My problem contains two LP model, LP1 and LP2 which be solved separately.

The variables of model LP1 and LP2 are defined as x[i,j] and y[i,j], respectively where

(i,j) in E, and

set E within (V cross V); 

set V := 1..n; 

 

I want to use the optimum solutions of LP1 and LP2, in third LP model LP3 as parameters.

For example, LP3 contains these commands:

param x{(i,j) in E};

param y{(i,j) in E};

                                                              

var z{(i,j) in E};                                

 

 

maximize Val: sum {(i,j) in E} (x(i,j)+ y(i,j))* z(i,j);

 

How should I save the optimum values of  x[i,j] and y[i,j] such that they

can be read in LP3 as parameters.

Thanks in advanced

Shaghayegh