Re: [Help-glpk] problem with dual

[Andrew Makhorin]

> I printt model ans solution how shoud I understund that?

> glp_print_sol give a this file
> 
> 
> Problem:    
> Rows:       5
> Columns:    5
> Non-zeros:  5
> Status:     UNDEFINED
> Objective:  objective = 0 (MINimum)
> 

The status UNDEFINED means that either the instance has not been solved
or the solver has failed. Most probably the former.

For description of the output format please see the reference manual and
also http://en.wikibooks.org/wiki/GLPK/Solution_information .