import copy
s=list(input())
n=len(s)
l=[]
for i in range(2**n):
  x=format(i,'0'+str(n)+'b')
  s2=copy.copy(s)
  l2=[]
  for j in range(n):
    if x[j]=='0':
      l2.append(s2.pop(0))
    else:
      l2.append(s2.pop(-1))
  l.append(''.join(l2))
print(len(set(l)))