diff --git a/Week04/decorators_mert_colakoglu.py b/Week04/decorators_mert_colakoglu.py
new file mode 100644
index 00000000..90c56033
--- /dev/null
+++ b/Week04/decorators_mert_colakoglu.py
@@ -0,0 +1,37 @@
+import time
+import tracemalloc
+
+def performance(func):
+    """
+    Evaluates the execution time and memory footprint of the function.
+
+    :param func: Function to decorate.
+    :type func: callable
+    :return: Wrapped function.
+    :rtype: callable
+
+    :cvar counter: Number of calls.
+    :cvar total_time: Total execution time in seconds.
+    :cvar total_mem: Total peak memory in bytes.
+    """
+    def _performance(*args, **kwargs):
+        tracemalloc.start()
+        start_tick = time.perf_counter()
+        
+        output = func(*args, **kwargs)
+        
+        end_tick = time.perf_counter()
+        current_mem, peak_mem = tracemalloc.get_traced_memory()
+        tracemalloc.stop()
+        
+        performance.counter += 1
+        performance.total_time += (end_tick - start_tick)
+        performance.total_mem += peak_mem
+        
+        return output
+
+    return _performance
+
+performance.counter = 0
+performance.total_time = 0.0
+performance.total_mem = 0