     5  # size of cost matrix
     3     8     2    10     3  # cost matrix
     8     7     2     9     7
     6     4     2     7     5
     8     4     2     3     5
     9    10     6     9    10
     5     3     2     4     1 # solution
    21
     5  # size of cost matrix
     3     9     2     3     7  # cost matrix
     6     1     5     6     6
     9     4     7    10     3
     2     5     4     2     1
     9     6     2     4     6
     1     2     5     4     3 # solution
    11
