F11ZBF Example Program Data
  4                   N
  9                   NNZ
  1.   3    2
  0.   2    1
  1.   3    2
  3.   4    4
  4.   1    1
  6.   2    2
  2.   3    3
  1.   3    2
  1.   3    2         A(I), IROW(I), ICOL(I), I=1,...,NNZ