diff --git a/schoeffelbe/pr01.py b/schoeffelbe/pr01.py
index 56e8192..a639e3b 100644
--- a/schoeffelbe/pr01.py
+++ b/schoeffelbe/pr01.py
@@ -101,6 +101,24 @@ def max_sequence_3(z: MemoryArray):
     rend = Literal(len(z) - 1)
     return _max_sequence_3(z, lstart, rend)
 
+def max_sequence_4(z: MemoryArray):
+    n = z.length()
+    max = MemoryCell(MIN_VALUE)
+    aktLinks = MemoryCell()
+    links = MemoryCell()
+    rechts = MemoryCell()
+    aktSum = MemoryCell()
+    for i in mrange(n):
+        aktSum += z[i]
+        if aktSum > max:
+            max.set(aktSum)
+            links.set(aktLinks)
+            rechts.set(i)
+        if aktSum < Literal(0):
+            aktSum.set(0)
+            aktLinks.set(MemoryCell(1) + i)
+    return (max, links, rechts)
+
 def example(max_sequence_func):
     l = [-59, 52, 46, 14, -50, 58, -87, -77, 34, 15]
     print(l)
@@ -133,7 +151,7 @@ def analyze_complexity(max_sequence_func, sizes):
 
 
 if __name__ == '__main__':
-    fn = max_sequence_3
+    fn = max_sequence_4
     example(fn)
     for filename in ["data/seq0.txt", "data/seq1.txt", "data/seq2.txt"]:
         print(filename)