diff --git a/Week04/decorators_melda_gungor.py b/Week04/decorators_melda_gungor.py
new file mode 100644
index 00000000..0e4a9020
--- /dev/null
+++ b/Week04/decorators_melda_gungor.py
@@ -0,0 +1,27 @@
+import time
+import tracemalloc
+
+
+tracemalloc.start()
+
+
+def performance(fn):
+    def wrapper(*args, **kwargs):
+        performance.counter += 1
+        tracemalloc.reset_peak()
+        start_time = time.perf_counter()
+        result = fn(*args, **kwargs)
+
+        
+        end_time = time.perf_counter()
+        performance.total_time += end_time - start_time
+        current_memory, peak_memory = tracemalloc.get_traced_memory()
+        performance.total_mem += peak_memory
+
+        return result
+
+    return wrapper
+
+performance.counter = 0
+performance.total_time = 0.0
+performance.total_mem = 0