func int main() {
  matrix a <3, 3>;
  double b;
  a = [1.1, 2.1, 3.1; 1.0, 2.0, 3.0; 4.1, 4.2, 4.3];
  b = a[0,0] + a[1,2];
  print(b);
  return 0;
}