From 85405686825ef2835c2152e9ecd8ca3ba9832089 Mon Sep 17 00:00:00 2001
From: Sara <snaldosa@andrew.cmu.edu>
Date: Tue, 9 Aug 2022 12:46:49 +0300
Subject: [PATCH] fixing -1

---
 fib.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fib.py b/fib.py
index 50722c2..5b1f1b2 100644
--- a/fib.py
+++ b/fib.py
@@ -6,6 +6,8 @@
 Negative numbers should return None
 """
 def fibonacci(position):
+  if (position < 0):
+    return None
   if(position == 1 or position == 2):
     return 1
   return fibonacci(position - 1) + fibonacci(position - 2)