diff --git a/src/index.js b/src/index.js
index 4101a36..a7e0d28 100644
--- a/src/index.js
+++ b/src/index.js
@@ -4,7 +4,17 @@
  * @returns {number[][]}
  */
 const findNodesWithZeroAndOneParents = (parentChildPairs) => {
-
+    let uniqueItems = parentChildPairs.flat();
+    uniqueItems = uniqueItems.filter((item, index) => uniqueItems.indexOf(item) == index)
+    const parentsCount = new Array(uniqueItems.length).fill(0);
+    parentChildPairs.map(pairs =>{
+        parentsCount[uniqueItems.indexOf(pairs[1])]++;
+    });
+    const result = [[],[]];
+    parentsCount.map((count, index) => {
+        if(count < 2) result[count].push(uniqueItems[index])
+    });
+    return result;
 }
 
 module.exports = findNodesWithZeroAndOneParents;
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