fixed init

Author: xxx595588

data_structures/binary_tree/segment_tree_node.py

@@ -156,4 +156,4 @@ def modify(
         if self.mode == "max":
             node.value = max(node.left.value, node.right.value)
         else:
-            node.value = node.left.value + node.right.value
+            node.value = node.left.value + node.right.value