diff --git a/.gitmodules b/.gitmodules
index f11f6bc..fa87380 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,9 @@
 [submodule "QM-7093-Enterprise-Data-Systems/QM-7093-Case-Study-1"]
 	path = QM-7093-Enterprise-Data-Systems/QM-7093-Case-Study-1
 	url = https://git.theschricks.com/noah/QM-7093-Case-Study-1
+[submodule "CS-7353-Analysis-of-Algs/Hidden_Line_Problem"]
+	path = CS-7353-Analysis-of-Algs/Hidden_Line_Problem
+	url = https://git.theschricks.com/noah/Hidden_Line_Problem
+[submodule "CS-7353-Analysis-of-Algs/Red-Black_Tree"]
+	path = CS-7353-Analysis-of-Algs/Red-Black_Tree
+	url = https://git.theschricks.com/noah/Red-Black_Tree
diff --git a/CS-7353-Analysis-of-Algs/Hidden_Line_Problem b/CS-7353-Analysis-of-Algs/Hidden_Line_Problem
new file mode 160000
index 0000000..98b6bb5
--- /dev/null
+++ b/CS-7353-Analysis-of-Algs/Hidden_Line_Problem
@@ -0,0 +1 @@
+Subproject commit 98b6bb595b10c9f64b63209260a705bc73a50420
diff --git a/CS-7353-Analysis-of-Algs/Red-Black_Tree b/CS-7353-Analysis-of-Algs/Red-Black_Tree
new file mode 160000
index 0000000..c883baf
--- /dev/null
+++ b/CS-7353-Analysis-of-Algs/Red-Black_Tree
@@ -0,0 +1 @@
+Subproject commit c883bafa850f6bbaeee300b054b5db6c107f6527