diff --git a/out/production/TamaGolem/it/arnaldo/unibs/tamagolem/WorldBuilder.class b/out/production/TamaGolem/it/arnaldo/unibs/tamagolem/WorldBuilder.class
index f22256d..8f87357 100644
Binary files a/out/production/TamaGolem/it/arnaldo/unibs/tamagolem/WorldBuilder.class and b/out/production/TamaGolem/it/arnaldo/unibs/tamagolem/WorldBuilder.class differ
diff --git a/src/LinearSystem.java b/src/LinearSystem.java
index cddd80e..a1c6725 100644
--- a/src/LinearSystem.java
+++ b/src/LinearSystem.java
@@ -34,7 +34,7 @@ public class LinearSystem {
         while (tries-- > 0) {
             int[] lambdaValues = new int[indipendentVariables];
             for (int i = 0; i < indipendentVariables; i++) {
-                lambdaValues[i] = (rand.nextInt(n) + 1); // valori tra 1 e 9
+                lambdaValues[i] = (rand.nextInt(m) + 1); // valori tra 1 e 9
             }
 
             solutions = constructSolution(extendedMatrix, lambdaValues, rank);
@@ -45,14 +45,10 @@ public class LinearSystem {
     }
 
     private boolean validNumbers(int[] x) {
-        boolean positive = false;
-        boolean negative = false;
         for (int xi : x) {
-            if (xi > 0) positive = true;
-            else if (xi < 0) negative = true;
-            if (xi == 0) return false;
+            if (xi <= 0) return false;
         }
-        return positive && negative;
+        return true;
     }
 
     private int[] constructSolution(int[][] extendedMatrix, int[] parameters, int rank) {
diff --git a/src/WorldBuilder.java b/src/WorldBuilder.java
index 94f44ed..1a929d7 100644
--- a/src/WorldBuilder.java
+++ b/src/WorldBuilder.java
@@ -8,7 +8,7 @@ public class WorldBuilder {
         Random rand = new Random();
         // da cambiare il numero a 8
         //int numElements = 3 + rand.nextInt(8);
-        int numElements = 5;
+        int numElements = 6;
         List<Element> selectedElements = new ArrayList<>(Arrays.asList(allElements));
         Collections.shuffle(selectedElements);
         selectedElements = selectedElements.subList(0, numElements);
@@ -23,7 +23,7 @@ public class WorldBuilder {
                 if (el == followingElement) {
                     links.put(el, 1);
                 } else if (el != element) {
-                    links.put(el, 1);
+                    links.put(el, 0);
                 }
             }
 
@@ -37,24 +37,24 @@ public class WorldBuilder {
                     continue;
                 }
 
-//                // controllo anche prima per evitare che magari da un estrazione si vada a togliere
-//                if (elementLinks.get(el) == 1){
-//                    linkDirections.get(el).put(element, -1);
-//                }
-//
-//                if (elementLinks.get(el) == 0) {
-//                    if (Math.random() < 0.5) {
-//                        linkDirections.get(el).put(element, 1);
-//                    } else {
-//                        linkDirections.get(el).put(element, -1);
-//                    }
-//                }
-//
-//                if (elementLinks.get(el) == 1){
-//                    linkDirections.get(el).put(element, -1);
-//                } else {
-//                    linkDirections.get(el).put(element, 1);
-//                }
+                // controllo anche prima per evitare che magari da un estrazione si vada a togliere
+                if (elementLinks.get(el) == 1){
+                    linkDirections.get(el).put(element, -1);
+                }
+
+                if (elementLinks.get(el) == 0) {
+                    if (Math.random() < 0.5) {
+                        linkDirections.get(el).put(element, 1);
+                    } else {
+                        linkDirections.get(el).put(element, -1);
+                    }
+                }
+
+                if (elementLinks.get(el) == 1){
+                    linkDirections.get(el).put(element, -1);
+                } else {
+                    linkDirections.get(el).put(element, 1);
+                }
             }
         }
 
@@ -114,8 +114,8 @@ public class WorldBuilder {
                 if (el == element) {
                     continue;
                 }
-                //int direction = linkDirections.get(element).get(el);
-                graphElement.addLink(new ElementLink(solution[getIndex(element, el, pairIndex)], el));
+                int direction = linkDirections.get(element).get(el);
+                graphElement.addLink(new ElementLink(solution[getIndex(element, el, pairIndex)] * direction, el));
             }
             world.addElement(graphElement);
         }