diff --git a/src/index.js b/src/index.js
index 4101a36..a8f56e8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -4,7 +4,30 @@
  * @returns {number[][]}
  */
 const findNodesWithZeroAndOneParents = (parentChildPairs) => {
-
+    let parents = []
+    let childs = []
+    for( let i = 0; i < parentChildPairs.length; i++){
+        if(!parents.includes(parentChildPairs[i][0])){
+            parents.push(parentChildPairs[i][0])
+        }
+        childs.push(parentChildPairs[i][1])
+    }
+    //Zero parents
+    for( let i = 0; i < parentChildPairs.length; i++){
+        if(parents.includes(parentChildPairs[i][1])){
+            let elementToRemove= parents.indexOf(parentChildPairs[i][1])
+            parents.splice(elementToRemove, 1)
+        }
+    }
+    let zeroParentsArray = parents
+    zeroParentsArray.sort((a, b) => a - b )
+    //One parent
+    let oneParentArray = childs.filter(function(value){
+        return childs.indexOf(value) === childs.lastIndexOf(value) 
+    })
+    oneParentArray.sort((a, b) => a - b )
+    
+    return arrays = [zeroParentsArray, oneParentArray]
 }
 
 module.exports = findNodesWithZeroAndOneParents;
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