#include <stdio.h>
#include <stdlib.h>
#include <gsl/gsl_blas.h>
#include <gsl/gsl_eigen.h>


#define MAXLEN 80
#define TOL 10.0E-6
#define MAXITE 100

int check(gsl_matrix *A);
void VectorSub(gsl_vector *a,gsl_vector *b,gsl_vector *ans);