diff --git a/Week03/pyramid_serhat_tufan.py b/Week03/pyramid_serhat_tufan.py
new file mode 100644
index 00000000..074df643
--- /dev/null
+++ b/Week03/pyramid_serhat_tufan.py
@@ -0,0 +1,15 @@
+
+def calculate_pyramid_height(number: int) -> int :
+    height=0
+    needed=1
+    while number>0:
+        if number >= needed:
+            height+=1 
+            number= number -1*needed
+            needed+= 1
+        else:
+            print("else awoken")
+            break
+    print(f"number is +{number}")
+    return height
+# print(calculate_pyramid_height(100000))