src/work/marci/lp/magic_square.cc
changeset 1252 4fee8e9d9014
parent 1153 4b0468de3a31
equal deleted inserted replaced
0:7c8529c78385 1:dc96d563723b
     8 using std::cout;
     8 using std::cout;
     9 using std::endl;
     9 using std::endl;
    10 using namespace lemon;
    10 using namespace lemon;
    11 
    11 
    12 /*
    12 /*
    13   for n=3,4 , the program is very fast
    13   On an 1537Mhz PC, the run times with 
    14   for n=5, with glpk, the run takes hours
    14   glpk are the following.
       
    15   for n=3,4, some secondes
       
    16   for n=5, 25 hours
    15  */
    17  */
    16 
    18 
    17 int main(int, char **) {
    19 int main(int, char **) {
    18   const int n=4;
    20   const int n=4;
    19   const double row_sum=(1.0+n*n)*n/2;
    21   const double row_sum=(1.0+n*n)*n/2;