S = input()
strset = set([])
for i in range(2**len(S)):
    h = 0
    t = len(S)-1 
    s = []
    for j in range(len(S)):
        if i & 1 << j:
            s.append(S[h])
            h += 1
        else:
            s.append(S[t])
            t -= 1
    strset.add("".join(s))
print(len(strset))