diff --git a/students_submissions/gcd_cs727.py b/students_submissions/gcd_cs727.py
new file mode 100644
index 0000000..4fcb8bf
--- /dev/null
+++ b/students_submissions/gcd_cs727.py
@@ -0,0 +1,24 @@
+def gcd(a: int, b: int) -> int:
+    # Type checking
+    if not isinstance(a, int) or not isinstance(b, int):
+        print("Error: Both arguments must be integers.")
+        return None
+
+    # Handle the undefined case gcd(0, 0)
+    if a == 0 and b == 0:
+        print("Error: GCD is undefined for a = 0 and b = 0.")
+        return None
+
+    # Work with absolute values to handle negatives
+    a, b = abs(a), abs(b)
+
+    # Base case: gcd(a, 0) = a
+    if b == 0:
+        return a
+
+    # Recursive Euclidean Algorithm
+    return gcd(b, a % b)
+
+print(gcd(54, 24))
+print(gcd(48, 18))
+print(gcd(101, 10))