From eaafd1ca3c99f6e97b8fc6026c470d81c4e7d023 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Sat, 19 Oct 2024 11:14:53 +0000
Subject: [PATCH] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 data_structures/persistent_segment_tree.py | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/data_structures/persistent_segment_tree.py b/data_structures/persistent_segment_tree.py
index 4b1670819..e153deff5 100644
--- a/data_structures/persistent_segment_tree.py
+++ b/data_structures/persistent_segment_tree.py
@@ -1,11 +1,13 @@
 from __future__ import annotations
 
+
 class Node:
     def __init__(self, value: int = 0) -> None:
         self.value: int = value
         self.left: Node | None = None
         self.right: Node | None = None
 
+
 class PersistentSegmentTree:
     def __init__(self, arr: list[int]) -> None:
         self.n: int = len(arr)
@@ -81,8 +83,9 @@ class PersistentSegmentTree:
             new_node.left = node.left
             new_node.right = self._update(node.right, mid + 1, end, index, value)
 
-        new_node.value = (new_node.left.value if new_node.left else 0) + \
-                         (new_node.right.value if new_node.right else 0)
+        new_node.value = (new_node.left.value if new_node.left else 0) + (
+            new_node.right.value if new_node.right else 0
+        )
 
         return new_node
 
@@ -121,12 +124,15 @@ class PersistentSegmentTree:
         if left <= start and right >= end:
             return node.value
         mid = (start + end) // 2
-        return (self._query(node.left, start, mid, left, right) +
-                self._query(node.right, mid + 1, end, left, right))
+        return self._query(node.left, start, mid, left, right) + self._query(
+            node.right, mid + 1, end, left, right
+        )
+
 
 # Running the doctests
 if __name__ == "__main__":
     import doctest
+
     print("Running doctests...")
     result = doctest.testmod()
     print(f"Ran {result.attempted} tests, {result.failed} failed.")