4    # of supply nodes.  Corresponding to M

6    # of demand nodes.  Correspoding to N

30	10	45	30   supplies of each source M

25   20   6   7   22   35    demands of each destination N

30   11   5    35   8    29  transportation cost from
2    5    2    5    1    9   supply node i to demand node j
35   20   6    40   8    33
19   2    4   30   10    25
