# http://chiwawa-star.hatenablog.com/entry/2017/07/12/194636

import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**6)
##############################


S = input().rstrip()

ptn = set()

def bfs(s, t):
#    print(s, t)
    if len(s) == 0:
        ptn.add(t)
        return

    bfs(s[1:], t+s[0])
    bfs(s[0:-1], t+s[-1])
    return

bfs(S, '')
print(len(ptn))