diff --git a/src/gauss.py b/src/gauss.py
new file mode 100755
index 0000000..1e20e5d
--- /dev/null
+++ b/src/gauss.py
@@ -0,0 +1,9 @@
+import sys
+def small_gaussian_sum(n: int) -> int:
+    return int((n**2 + n) / 2)
+
+if __name__ == "__main__":
+    if sys.argv.__len__() < 2:
+        print("provide a natural number as arg")
+    else:
+        print(small_gaussian_sum(int(sys.argv[1])))
diff --git a/src/greek_to_me.py b/src/greek_to_me.py
old mode 100644
new mode 100755