S = input()
num = len(S)

g = set()
for mask in range(1<<num):
    t = []
    T = list(S)
    for bit in range(num):
        if mask >> bit & 1 == 1:
            t.append(T.pop(-1))
        else:
            t.append(T.pop(0))

    g.add("".join(t))

print(len(g))