diff --git a/build.py b/build.py
index ca073ba..742238d 100644
--- a/build.py
+++ b/build.py
@@ -1,4 +1,13 @@
+import numpy as np
+x = [[ 1., 1., 1., 1., 1.], [ 1., 1., 1., 1., 1.],[ 1., 1., 1., 1., 1.],[ 1., 1., 1., 1., 1.],[ 1., 1., 1., 1., 1.]]
 def solution(array):
-    """
-    Enter code here
-    """
\ No newline at end of file
+    x = np.array(array)
+    x[1:-1,1:-1] = 0
+    return x
+
+# solution(x)
+# Output : array([[ 1.,  1.,  1.,  1.,  1.],
+#                 [ 1.,  0.,  0.,  0.,  1.],
+#                 [ 1.,  0.,  0.,  0.,  1.],
+#                 [ 1.,  0.,  0.,  0.,  1.],
+#                 [ 1.,  1.,  1.,  1.,  1.]])
diff --git a/build.pyc b/build.pyc
new file mode 100644
index 0000000..b6f93bc
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diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..0bd72e1
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..a5be37c
Binary files /dev/null and b/tests/test_solution.pyc differ