S = input()
N = len(S)

uniq = set()

for pat in range(2**N):
    t = [''] * N
    l, r = 0, N-1
    for b in range(N):
        if pat & (1<<b):
            t[b] = S[l]
            l += 1
        else:
            t[b] = S[r]
            r -= 1
    uniq.add(''.join(t))

print(len(uniq))