diff --git a/d09/run1.py b/d09/run1.py
index 9f7195f..8eec455 100644
--- a/d09/run1.py
+++ b/d09/run1.py
@@ -4,17 +4,14 @@ L = sys.stdin.read().splitlines()
 S = 0
 for report in L:
     l = [int(r) for r in report.split(' ')]
-    m = list(l)
-    latest=[]
-    latest.append(m[-1])
+    S+=l[-1]
 
     while not all(v == 0 for v in l):
         m = []
         for i in range(0,len(l)-1):
             m.append(l[i+1] - l[i])
             
-        latest.append(m[-1])
+        S+=m[-1]
         l = list(m)
-    S+=sum(latest)
 
 print(S)
\ No newline at end of file