diff --git a/.hash b/.hash
index ab5aaf1..e48d758 100644
--- a/.hash
+++ b/.hash
@@ -1,6 +1,6 @@
 ainotes.cls,d9b2afb
 cognition-and-neuroscience,f619bee
-combinatorial-decision-making-and-optimization/module1,400dfd1
+combinatorial-decision-making-and-optimization/module1,1ebcad4
 combinatorial-decision-making-and-optimization/module2,1cd91f0
 deep-learning,2582b90
 fundamentals-of-ai-and-kr/module1,400dfd1
diff --git a/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf b/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf
index 21a91a2..f6a484d 100644
Binary files a/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf and b/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf differ