diff --git a/09-Segment-Tree/01-Segment-Tree-Basics/src/SegmentTree.java b/09-Segment-Tree/01-Segment-Tree-Basics/src/SegmentTree.java
index 2554b3b..155ea87 100644
--- a/09-Segment-Tree/01-Segment-Tree-Basics/src/SegmentTree.java
+++ b/09-Segment-Tree/01-Segment-Tree-Basics/src/SegmentTree.java
@@ -1,5 +1,3 @@
-import javax.xml.transform.Result;
-
 /**
  * @Auther: lss
  * @Date: 2019/2/26 20:53