S = list(input())
SS = set()
N = len(S)
for i in range(1 << N):
    L = []
    left, right = 0, N - 1
    for j in range(N):
        if (i >> j) & 1:
            L.append(S[left])
            left += 1
        else:
            L.append(S[right])
            right -= 1
    SS.add("".join(L))
print(len(SS))