def f(a, b):
    return

print(f([1,2,3], [4,5,6]))

def isPalindrome(s):
    return

assert(isPalindrome("abba") == True)
assert(isPalindrome("Dancing Queen") == False)
assert(isPalindrome("123321") == True)


def listMultiply(L):
    return

assert(listMultiply([1,2,3]) == [1,2,2,3,3,3])
assert(listMultiply([6]) == [6,6,6,6,6,6])