diff --git a/notes/算法.md b/notes/算法.md
index a0995ebe..41b62b2b 100644
--- a/notes/算法.md
+++ b/notes/算法.md
@@ -377,7 +377,7 @@ public void union(int p, int q) {
 
 但是 find 操作开销很大，因为同一个连通分量的节点 id 值不同，id 值只是用来指向另一个节点。因此需要一直向上查找操作，直到找到最上层的节点。
 
-<div align="center"> <img src="../pics//c5043b7e-6efe-4c55-b663-272e1097ed21.png" width="300"/> </div><br>
+<div align="center"> <img src="../pics//61f8292b-eca0-4f46-a1be-f18d1e5c6fa9.png" width="300"/> </div><br>
 
 ```java
     public int find(int p) {
diff --git a/pics/61f8292b-eca0-4f46-a1be-f18d1e5c6fa9.png b/pics/61f8292b-eca0-4f46-a1be-f18d1e5c6fa9.png
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