From 280922cc0b67fa8a7f930b9a1130522a04c733f4 Mon Sep 17 00:00:00 2001
From: TurinTech Bot <bot@turintech.ai>
Date: Fri, 19 Jul 2024 09:03:28 +0000
Subject: [PATCH] Artemis Changes

---
 src/control/double.cc | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/control/double.cc b/src/control/double.cc
index bb9dba1..9cf94db 100644
--- a/src/control/double.cc
+++ b/src/control/double.cc
@@ -24,15 +24,11 @@ DoubleForLoop::SumSquare(int n) {
  *
  * @param n
  * @return the sum of all triangle numbers from T(1) to T(n)
- */
+ */ 
 long
 DoubleForLoop::SumTriangle(int n) {
-  long sum = 0;
-  for (int i = 0; i < n + 1; i += 1) {
-    for (int j = 0; j < i; j += 1) {
-      sum = sum + (long) j;
-    }
-  }
+  if (n <= 0) return 0;
+  long sum = (long)n * (n - 1) * (n + 1) / 6;
   return sum;
 }
 
@@ -98,4 +94,4 @@ DoubleForLoop::SumMatrix(std::vector<std::vector<int>> matrix) {
     }
   }
   return sum;
-}
+}
\ No newline at end of file