def func(s):
    if len(s) == 1:
        return {s}
    else:
        t = func(s[1:])
        u = { s[0] + x for x in t }
        v = func(s[:-1])
        w = { s[-1] + x for x in v }
        return u.union(w)

s = raw_input()
print len(func(s))