from sys import stdin, stdout

input = lambda: stdin.readline().rstrip()
write = stdout.write

def operation(s):
    l = len(s)
    a = [0] * l
    ret = set()
    def ope_(s):
        if len(s) == 1:
            a[-1] = s
            ret.add(tuple(a))
            return
        i = l - len(s)
        a[i] = s[0]; ope_(s[1:])
        a[i] = s[-1]; ope_(s[:-1])
    ope_(s)
    return ret

def main():
    S = input()

    ret = operation(S)
    print(len(ret))

main()