S = input()
st0 = [""]
st1 = [S]
a = set()

while len(st1) > 0:
    h = st0.pop()
    r = st1.pop()
    if len(r) < 2:
        a.add(h + r)
    else:
        st0.append(h + r[0])
        st1.append(r[1:])
        st0.append(h + r[-1])
        st1.append(r[:-1])

print(len(a))