diff --git a/experiments/genetic_landscape.py b/experiments/genetic_landscape.py
index 1c314a6c..03e1ea77 100644
--- a/experiments/genetic_landscape.py
+++ b/experiments/genetic_landscape.py
@@ -52,9 +52,9 @@ def run_test(args):
 # Number of iterations for each graph size
 total_iters = 1
 # Number of graph sizes
-graphs = 10
+graphs = 1
 # Graph sizes
-sizes = [30 * i for i in range(1, graphs + 1)]
+sizes = [100 * i for i in range(1, graphs + 1)]
 total_results = []
 # Seed for random number generator can be specified here
 # seed = 1
diff --git a/sampo/generator/base.py b/sampo/generator/base.py
index 1c9eefe2..9fa7c00c 100644
--- a/sampo/generator/base.py
+++ b/sampo/generator/base.py
@@ -93,7 +93,7 @@ def set_materials_for_wg(self, wg: WorkGraph, materials_name: list[str] = None,
             if top_border is None:
                 top_border = len(materials_name)
 
-        if bottom_border >= len(materials_name) or top_border >= len(materials_name):
+        if bottom_border > len(materials_name) or top_border > len(materials_name):
             raise ValueError('The borders are out of the range of materials_name')
 
         for node in wg.nodes:
diff --git a/sampo/schemas/landscape.py b/sampo/schemas/landscape.py
index 8880830f..6b3d992c 100644
--- a/sampo/schemas/landscape.py
+++ b/sampo/schemas/landscape.py
@@ -162,7 +162,7 @@ def dijkstra(node_ind: int):
                         continue
                     d = dist + road.weight
                     finish_ind = self._node2ind[road.finish]
-                    if d < distances[finish_ind] and road.id in roads_available_set:
+                    if d < distances[finish_ind]:
                         distances[finish_ind] = d
                         path_mx[node_ind][finish_ind] = v
                         heapq.heappush(prior_queue, (d, finish_ind))
@@ -184,13 +184,11 @@ def dijkstra(node_ind: int):
         if path_mx[to_ind][from_ind] == -1:
             return []
 
-        path_tmp = []
         fr = from_ind
+        path = [from_ind]
         while path_mx[to_ind][fr] != to_ind:
-            path_tmp.append(path_mx[to_ind][fr])
+            path.append(path_mx[to_ind][fr])
             fr = path_mx[to_ind][fr]
-        path = [from_ind]
-        path.extend(path_tmp)
         path.append(to_ind)
         return [self.road_mx[path[v]][path[v + 1]] for v in range(len(path) - 1)]