diff --git a/05_docstring/submissions/jeon193.py b/05_docstring/submissions/jeon193.py
new file mode 100644
index 0000000..77f18b7
--- /dev/null
+++ b/05_docstring/submissions/jeon193.py
@@ -0,0 +1,14 @@
+
+def afunc(array1, array2, mode: str = "+", pow: int = 2):
+    assert array1.shape == array2.shape, "size mismatch"
+    assert type(pow) == int, "pow should be type int"
+
+    if mode == "+":
+        result = array1 + array2
+    elif mode == "-":
+        result = array1 - array2
+    else:
+        raise ValueError(f"mode is either '+' or '-' but got {mode}")
+
+    result = result ** pow
+    return result