S = input()
T = [('', 0, -1)]
for i in range(len(S)):
    newT = []
    for t, head, tail in T:
        newT.append((t + S[head], head + 1, tail))
        newT.append((t + S[tail], head, tail - 1))
    T = newT
uniqT = set([t for t, head, tail in T])
print(len(uniqT))