# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	S = input()
	T = S[::-1]
	D = defaultdict(int)
	N = len(S)

	for i in range(1 << N):
		p = 0
		q = 0
		string = ""
		for j in range(N):
			if ((i >> j) & 1) == 1:
				string += S[p]
				p += 1
			else:
				string += T[q]
				q += 1
		D[string] = 1

	ans = len(D)
	print(ans)

if __name__ == '__main__':
	main()