class_docstr: Calculate the Munkres solution to the classical assignment problem.
  See the module documentation for usage.
docstr: Find the smallest uncovered value in the matrix.
docstr_tok: ["Find","the","smallest","uncovered","value","in","the","matrix","."]
code: def __find_smallest(self):
      """Find the smallest uncovered value in the matrix."""
      minval = 2e9  # sys.maxint
      for i in range(self.n):
          for j in range(self.n):
              if (not self.row_covered[i]) and (
                  not self.col_covered[j]
              ):
                  if minval > self.C[i][j]:
                      minval = self.C[i][j]
      return minval
  
imports: import sys
label_desc: Use image node_id 13 for calling the Munkres obj's underlying member method code with example usage: obj.__find_smallest() and returns: minval