diff --git a/Week04/decorators_sergen_maksutlar.py b/Week04/decorators_sergen_maksutlar.py
new file mode 100644
index 00000000..d1293ba3
--- /dev/null
+++ b/Week04/decorators_sergen_maksutlar.py
@@ -0,0 +1,36 @@
+import time
+import tracemalloc
+
+
+def monitor(func):
+
+    def execute(*args, **kwargs):
+
+        tracemalloc.start()
+
+        initial_time = time.perf_counter()
+        initial_memory = tracemalloc.get_traced_memory()[0]
+
+        tracemalloc.reset_peak()
+
+        try:
+            output = func(*args, **kwargs)
+
+        finally:
+            elapsed_time = time.perf_counter() - initial_time
+            used_memory, max_memory = tracemalloc.get_traced_memory()
+
+            monitor.calls += 1
+            monitor.duration += elapsed_time
+            monitor.memory_usage += max_memory - initial_memory
+
+            tracemalloc.stop()
+
+        return output
+
+    return execute
+
+
+monitor.calls = 0
+monitor.duration = 0
+monitor.memory_usage = 0