from itertools import product

s = [i for i in input()]
ans = []

n = len(s)
for i in product(range(2), repeat=n):
    
    S = s.copy()
    
    t = ''
    
    for j in i:
        
        if j:
            t += S.pop()
            
        else:
            
            t += S.pop(0)
            
    ans += [t]
    
    
print(len(set(ans)))