s = input()
x = len(s)
ans = set()

for i in range(1 << (x - 1)):
    tmp = ''
    st = 0
    fi = x - 1
    for j in range(x - 1):
        if (i >> j) % 2:
            tmp += s[st]
            st += 1
        else:
            tmp += s[fi]
            fi -= 1
            
    ans.add(tmp)
    
print(len(ans))