From b2d2c6d16d4862eb43e86233605d9a63c94c73e6 Mon Sep 17 00:00:00 2001
From: Andrei Navumenka <indy256@gmail.com>
Date: Sun, 7 Jul 2024 14:41:21 -0400
Subject: [PATCH] Improve java perstistent tree

---
 java/structures/PersistentTree.java | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/java/structures/PersistentTree.java b/java/structures/PersistentTree.java
index b0694f5c..2b9450b5 100644
--- a/java/structures/PersistentTree.java
+++ b/java/structures/PersistentTree.java
@@ -13,10 +13,7 @@ public static class Node {
         Node(Node left, Node right) {
             this.left = left;
             this.right = right;
-            if (left != null)
-                sum += left.sum;
-            if (right != null)
-                sum += right.sum;
+            sum = left.sum + right.sum;
         }
     }