diff --git a/src/CompatibilityChecker.java b/src/CompatibilityChecker.java
index 2ffa92f..a550d80 100644
--- a/src/CompatibilityChecker.java
+++ b/src/CompatibilityChecker.java
@@ -1,28 +1,29 @@
 package src;
 
+import java.util.HashMap;
 import java.util.Set;
 import fr.istic.nplouzeau.cartaylor.api.PartType;
 
 
+
 public class CompatibilityChecker implements fr.istic.nplouzeau.cartaylor.api.CompatibilityChecker {
 
-    private Set<PartType> incompatibilities;
-    private Set<PartType> requirements;
+    private HashMap<PartType, Set<PartType>> incompatibilites;
+    private HashMap<PartType, Set<PartType>> requirements;
 
     public CompatibilityChecker(Set<PartType> incompatibilities, Set<PartType> requirements){
-        this.requirements=requirements;
-        this.incompatibilities=incompatibilities;
-    }
-    @Override
-    public Set<PartType> getIncompatibilities(PartType reference){
-        /*TODO*/
-        return this.incompatibilities;
+
     }
 
     @Override
-    public Set<PartType> getRequirements(PartType reference){
-        /*TODO*/
-        return this.requirements;
+    public Set<PartType> getIncompatibilities(PartType reference) {
+        return this.incompatibilites.get(reference);
     }
 
+    @Override
+    public Set<PartType> getRequirements(PartType reference) {
+        return this.requirements.get(reference);
+    }
+
+
 }