import sys
input=lambda: sys.stdin.readline().rstrip()
S=input()
n=len(S)
Ans=set()
for i in range(2**n):
  cur=""
  l,r=0,n-1
  for j in range(n):
    if i&(1<<j):
      cur+=S[l]
      l+=1
    else:
      cur+=S[r]
      r-=1
  Ans.add(cur)
print(len(Ans))