s = list(input())
out_list = []

def dfs(i, o):
    if len(i) == 0:
        if o in out_list:
            return 0
        else:
            out_list.append(o)
            return 1
    else:
        return dfs(i[1:], o + [i[0]]) + dfs(i[:-1], o + [i[-1]])

print(dfs(s, []))