s = input()
se = set()

for S in range(1<<len(s)):
    now = ""
    l, r = 0, len(s)-1
    
    for i in range(len(s)):
        if (S>>i)&1:
            now += s[l]
            l += 1
        else:
            now += s[r]
            r -= 1
        
    se.add(now)
    
print(len(se))