import collections

s = list(input())

se = set()
for i in range(2**len(s)):
    st = [''] * len(s)
    ss = collections.deque(s)
    p = i
    for j in range(len(s)):
        if p % 2 == 0:
            st[j] = ss.popleft()
        else:
            st[j] = ss.pop()
        p //= 2
    se.add(''.join(st))
print(len(se))