diff --git "a/Week04/decorators_mert_do\304\237an_ayg\303\274n.py" "b/Week04/decorators_mert_do\304\237an_ayg\303\274n.py"
new file mode 100644
index 00000000..1304daf6
--- /dev/null
+++ "b/Week04/decorators_mert_do\304\237an_ayg\303\274n.py"
@@ -0,0 +1,22 @@
+import time
+import tracemalloc
+
+
+def track_performance(func):
+    setattr(track_performance, 'call_count', 0)
+    setattr(track_performance, 'cumulative_time', 0.0)
+    setattr(track_performance, 'cumulative_memory', 0.0)
+
+    def wrapper(*args, **kwargs):
+        tracemalloc.start()
+        start_time = time.time()
+        result = func(*args, **kwargs)
+        end_time = time.time()
+        current_memory, peak_memory = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+        setattr(track_performance, 'call_count', getattr(track_performance, 'call_count') + 1)
+        setattr(track_performance, 'cumulative_time', getattr(track_performance, 'cumulative_time') + (end_time - start_time))
+        setattr(track_performance, 'cumulative_memory', getattr(track_performance, 'cumulative_memory') + peak_memory)
+        return result
+
+    return wrapper