diff --git "a/notes/\345\211\221\346\214\207 offer \351\242\230\350\247\243.md" "b/notes/\345\211\221\346\214\207 offer \351\242\230\350\247\243.md"
index 05d435789543398192670c316683b4a3701d259e..9cf7dc2ad67845085823424caf8453a83bb6d751 100644
--- "a/notes/\345\211\221\346\214\207 offer \351\242\230\350\247\243.md"	
+++ "b/notes/\345\211\221\346\214\207 offer \351\242\230\350\247\243.md"	
@@ -170,7 +170,7 @@ Given target = 20, return false.
 
 当前元素的查找区间为左下角的所有元素，例如元素 12 的查找区间如下：
 
-<div align="center"> <img src="../pics//026d3cb4-67f7-4a83-884d-8032f57ec446.png" width="250"/> </div><br>
+<div align="center"> <img src="../pics//f94389e9-55b1-4f49-9d37-00ed05900ae0.png" width="250"/> </div><br>
 
 复杂度：O(M + N) + O(1)
 
diff --git a/pics/f94389e9-55b1-4f49-9d37-00ed05900ae0.png b/pics/f94389e9-55b1-4f49-9d37-00ed05900ae0.png
new file mode 100644
index 0000000000000000000000000000000000000000..4981769799bd772cfc25fc4a65b926e022683920
Binary files /dev/null and b/pics/f94389e9-55b1-4f49-9d37-00ed05900ae0.png differ