diff --git a/sum.py b/sum.py
index 3876723..b33630d 100644
--- a/sum.py
+++ b/sum.py
@@ -1,3 +1,3 @@
-a = 10
-b = 2
-print(a+b)
+def check(a,b):
+  return a in b
+check("ab" , "abcd")