from itertools import product
from collections import deque
S = list(input())
N = len(S)

ans = set()
for pat in product([0,1], repeat=N-1):
    material = deque(S[:])
    newS = []
    for i in range(N - 1):
        if pat[i] == 0:
            newS.append(material.popleft())
        else:
            newS.append(material.pop())
    newS.append(material.pop())
    ans.add(''.join(newS))

print(len(ans))