diff --git a/demo.py b/demo.py
new file mode 100644
index 0000000..ff74dc5
--- /dev/null
+++ b/demo.py
@@ -0,0 +1,2 @@
+a=10
+b=15
diff --git a/sk.py b/sk.py
index eee0006..ce0e53c 100644
--- a/sk.py
+++ b/sk.py
@@ -1,3 +1,3 @@
 a=10
-b=20
+b=22
 print(a+b)
\ No newline at end of file