diff --git a/.hash b/.hash
index fd919db..c8ae9ce 100644
--- a/.hash
+++ b/.hash
@@ -1,8 +1,8 @@
 ainotes.cls,5927cc8
 year1/cognition-and-neuroscience/module1,4a90d7e
 year1/cognition-and-neuroscience/module2,76ce622
-year1/combinatorial-decision-making-and-optimization/module1,9ed085e
-year1/combinatorial-decision-making-and-optimization/module2,9d6b6aa
+year1/combinatorial-decision-making-and-optimization/module1,92c473b
+year1/combinatorial-decision-making-and-optimization/module2,92c473b
 year1/deep-learning,cd5fd9f
 year1/fundamentals-of-ai-and-kr/module1,79b3324
 year1/fundamentals-of-ai-and-kr/module2,79b3324
diff --git a/year1/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf b/year1/combinatorial-decision-making-and-optimization/module1/cdmo1.pdf
index 084a8b2..29effb7 100644
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diff --git a/year1/combinatorial-decision-making-and-optimization/module2/cdmo2.pdf b/year1/combinatorial-decision-making-and-optimization/module2/cdmo2.pdf
index 895d7a3..f7b17ad 100644
Binary files a/year1/combinatorial-decision-making-and-optimization/module2/cdmo2.pdf and b/year1/combinatorial-decision-making-and-optimization/module2/cdmo2.pdf differ