diff --git a/build.py b/build.py
index ca073ba..cb69888 100644
--- a/build.py
+++ b/build.py
@@ -1,4 +1,6 @@
 def solution(array):
     """
     Enter code here
-    """
\ No newline at end of file
+    """
+    array[1:4,1:4] = 0
+    return array 
diff --git a/build.pyc b/build.pyc
new file mode 100644
index 0000000..cc7b1c4
Binary files /dev/null and b/build.pyc differ
diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..f67bb4e
Binary files /dev/null and b/tests/__init__.pyc differ
diff --git a/tests/test_solution.pyc b/tests/test_solution.pyc
new file mode 100644
index 0000000..78879bf
Binary files /dev/null and b/tests/test_solution.pyc differ