s = input()
S = set()
for T in range(1<<len(s)):
    l, r = 0, -1
    t = ""
    for i in range(len(s)):
        if T>>i & 1:
            t += s[l]
            l += 1
        else:
            t += s[r]
            r -= 1
    S.add(t)
print(len(S))