
From:  Boyko Aleksey 
Subject:  [Bugglpk] Doesn't Solve A Simple Problem 
Date:  Tue, 28 Mar 2006 10:04:55 +0400 
Dear Sirs, I tried solving a simple problem using GLPK on a MS Visual Studio 6. I attached the code itself to the email  the lines where I use you library is in the Filter() function. The rest of the code is rather sloppy because of the time limits but it forms correct matrices which I put into an LPX structure. In the enclosed example I try solving a simple problem of minimizing Z=x3+x4 With the the variables constrained as follows: x1+00+x3+00<=10 00+x2+00+x4<=10 x1+00+x3+00<=10 00x2+00+x4<=10 00+00x3+00<=0 00+00+00x4<=0 And the output is usually 0: objval = 0.000000000e+000 infeas = 1.000000000e+000 (0) PROBLEM HAS NO FEASIBLE SOLUTION Here's as much as I got so far.
Dear Sirs,
I tried solving a simple problem using GLPK on a MS
Visual Studio 6. I attached the code itself to the email  the lines where
I use you library is in the Filter() function.
The rest of the code is rather sloppy because
of the time limits but it forms correct matrices which I put into an LPX
structure. In the enclosed example I try solving a simple problem of
minimizing
Z=x3+x4
With the the variables constrained as
follows:
x1+00+x3+00<=10
00+x2+00+x4<=10
x1+00+x3+00<=10
00x2+00+x4<=10
00+00x3+00<=0
00+00+00x4<=0
And the output is usually
0:
objval = 0.000000000e+000 infeas = 1.000000000e+000
(0)
PROBLEM HAS NO FEASIBLE SOLUTION Here's as much as I got so
far.

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