def dfs(leng, n, s, s2, d):
    if leng == n:
        d.add(s2)
        return

    dfs(leng + 1, n, s[1:], s2 + s[0], d)
    dfs(leng + 1, n, s[:-1], s2 + s[-1], d)

s = input()
n = len(s)

d = set()
dfs(0, n, s, '', d)

# print(d)
ans = len(d)
print(ans)