import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

S = read().rstrip().decode()

def F(S):
    if not S:
        yield ''
        return
    for T in F(S[1:]):
        yield S[0] + T
    for T in F(S[:-1]):
        yield S[-1] + T

answer = len(set(F(S)))
print(answer)