From d2eeea8a252d39f55410152a7db0b0926846c871 Mon Sep 17 00:00:00 2001
From: s45164 <filwoj@st.amu.edu.pl>
Date: Fri, 1 Dec 2017 17:11:41 +0000
Subject: [PATCH] Update 'labs02/task04.py'

---
 labs02/task04.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/labs02/task04.py b/labs02/task04.py
index 37413f1..9f1c24d 100644
--- a/labs02/task04.py
+++ b/labs02/task04.py
@@ -7,9 +7,12 @@ Jeśli podany argument jest mniejszy od 1 powinna być zwracana wartość 0.
 """
 
 def sum_from_one_to_n(n):
+    if n<1:
+      return 0
+    else:
+      return n*(n+1)/2
     pass
 
-
 def tests(f):
     inputs = [[999], [-100]]
     outputs = [499500, 0]