From 4b7ce3d10fdea5e4f11292ddecc2ddc0f97a7bf9 Mon Sep 17 00:00:00 2001
From: Tobias Langer <tobias.langer@oth-regensburg.de>
Date: Sun, 6 Nov 2016 15:27:49 +0100
Subject: [PATCH] Minor optimization of the summation algorithm.

---
 test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test.c b/test.c
index 0118cc8..56ed6a4 100644
--- a/test.c
+++ b/test.c
@@ -5,7 +5,7 @@
 
 int sum(int n)
 {
-    return ((n + 1) * n) / 2;
+    return ((n - 1) * n) / 2;
 }
 
 void usage(const char* app_name, const char* err_string)
--
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