diff --git a/cgi-bin/vorbereitung/rolfhaist.py b/cgi-bin/vorbereitung/rolfhaist.py
new file mode 100644
index 0000000..314b911
--- /dev/null
+++ b/cgi-bin/vorbereitung/rolfhaist.py
@@ -0,0 +1,20 @@
+#!/usr/bin/python3
+
+import cgi
+
+print("Content-type:text/html")
+
+def fac_iter(n):
+    res = 1
+    for i in range(1,n + 1):
+        res *= i
+    return res
+
+def fak(n):
+    if n <= 1:
+        return 1
+    else:
+        return n * fak(n - 1)
+        
+print("LUL {} FORMAT".format(fac_iter(1000)))
+print("LUL {} FORMAT".format(fak(500)))