S=input()
N=len(S)
st=set()
for i in range(1<<N):
    s=""
    a,b=0,-1
    for j in range(N):
        if(i&(1<<j)):
            s+=S[a]
            a+=1
        else:
            s+=S[b]
            b-=1
    st.add(s)
print(len(st))