Originally posted by: Mintch Zulitch

Hi everyone,

I've developed a CPLEX model for the magic square problem "USING CP".

As we know, for example for N=4, we might have 3 or 4 matrices that are magic squares. (Note that parameter N is the dimension of a square matrix)

Now, the question is how is it possible to obtain all possible solutions when I run the model?

pp: model in the attachment

Hi,

let me give you an example:

using CP;

 dvar int x in 0..10;
 subject to
 {
 x<=5;
 }
 
 execute
 {
 writeln(x);
 }

 main {
  cp.param.SearchType=24;
  thisOplModel.generate();
  cp.startNewSearch();

  var k=1;
  while (cp.next()) {
      writeln(k,"th solution");
      thisOplModel.postProcess();
      k++;             
  };
  cp.endSearch();
 
}

regards

Originally posted by: Mintch Zulitch

very thanks

Originally posted by: Mintch Zulitch

Hi,
thanks for your help.
This piece of code generates about 4000 matrices which 1000 matrices are original and the others are the same as 1000 and they are repetitive.
So, how can I publish only original ones not the repetitive solutions.

Hi,

after

cp.param.SearchType=24;

you should write

cp.param.workers=1;

regards