S = raw_input()
slist = []
for i in range(0, len(S)):
	slist.append(S[i])
stack = [[[], slist]]
memo = [slist]
while stack != []:
	now = stack.pop(-1)
	if now[1] != []:
		a = []
		b = []
		for i in range(0, len(now[0])):
			a.append(now[0][i])
			b.append(now[0][i])
		s1 = []
		s2 = []
		for i in range(0, len(now[1])):
			s1.append(now[1][i])
			s2.append(now[1][i])
		a.append(s1.pop(0))
		b.append(s2.pop(-1))
		stack.append([a, s1])
		stack.append([b, s2])
	else:
		if now[0] not in memo: memo.append(now[0])
print len(memo)