diff --git a/Note/Dynamic Programming.md b/Note/Dynamic Programming.md
index 2b04b4a..138982d 100644
--- a/Note/Dynamic Programming.md	
+++ b/Note/Dynamic Programming.md	
@@ -1 +1,4 @@
-# Dynamic programming 動態規劃
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+# Dynamic programming 動態規劃
+
+## 2D
+https://hackmd.io/@bangyewu/By3RWr0ZT
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