// The constraints (A) will be expressed by putting directly bounds
// on the variables (i.e. one per column). So we need one row per
// (B) constraint, and one per (C) constraint.
glp_add_rows(lp, nb_points + _nb_clusters * nb_classes);
// The constraints (A) will be expressed by putting directly bounds
// on the variables (i.e. one per column). So we need one row per
// (B) constraint, and one per (C) constraint.
glp_add_rows(lp, nb_points + _nb_clusters * nb_classes);