user_input = input()
if type(user_input) ==int or float:
print("Is a number")
else:
print("Not a number")
dXNlcl9pbnB1dCA9IGlucHV0KCkKaWYgdHlwZSh1c2VyX2lucHV0KSA9PWludCBvciBmbG9hdDoKICAgIHByaW50KCJJcyBhIG51bWJlciIpCmVsc2U6CiAgICBwcmludCgiTm90IGEgbnVtYmVyIik=