add third sorting critera

deconvolution/d2graph/path_optimization.py

@@ -66,7 +66,7 @@ class Optimizer:
                 u = opt.d2g.node_by_idx[int(node)]
                 return (0 if len(Counter(opt.d2g.get_covering_variable_node(int(node))) - coverage) == 0 else 1,
                         - u.get_link_divergence(),
-                        self.d2g[str(u.idx)][str(current_node)]["distance"])
+                        - self.d2g[str(u.idx)][str(current_node)]["distance"])
             neighbors.sort(key=node_sorting_value)
             stack.append(neighbors)