S=input()
D=[{}for i in range(len(S)+1)]
D[0][("",S)]=1
#print(D)
for i in range(1,len(S)+1):
    for k,v in D[i-1].items():
        K,V=k
        #D[i][v[0]+k]=v[1:]
        D[i][(K+V[0],V[1:])]=1
        #D[i][v[-1]+k]=v[:len(v)-1]
        D[i][(K+V[-1],V[:len(V)-1])]=1
print(len(D[-1]))