S = input()
n = len(S)
se = set()
for bit in range(1 << n):
    tmp = []
    l = 0
    r = n - 1
    for i in range(n):
        if bit >> i & 1:
            tmp.append(S[l])
            l += 1
        else:
            tmp.append(S[r])
            r -= 1
    se.add("".join(tmp))
print(len(se))