diff --git a/same-tree/reeseo3o.js b/same-tree/reeseo3o.js
new file mode 100644
index 0000000000..91279364cf
--- /dev/null
+++ b/same-tree/reeseo3o.js
@@ -0,0 +1,10 @@
+// Time Complexity: O(n)
+// Space Complexity: O(n)
+const isSameTree = (p, q) => {
+  if (p === null && q === null) return true;
+
+  if (p === null || q === null) return false;
+  if (p.val !== q.val) return false;
+
+  return isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
+};