#include <bits/stdc++.h>
#include <atcoder/all>


using namespace std;
using namespace atcoder;
#define rep(i,m,n,k) for (int i = (int)(m); i < (int)(n); i += (int)(k))
#define rrep(i,m,n,k) for (int i = (int)(m); i > (int)(n); i += (int)(k))
#define ll long long
#define list(T,A,N) vector<T> A(N);for(int i=0;i<(int)(N);i++){cin >> A[i];}


int main(){
    
    string S;
    cin >> S;
    int N = (int)(S.size());
    set<string> X;
    string tmp;
    int l,r;
    rep(i,0,1<<N,1){

        l = 0;
        r = N-1;
        tmp = "";
        rep(j,0,N,1){
            if ((i>>j)&1){
                tmp += S[l];
                l += 1;
            }
            else{
                tmp += S[r];
                r -= 1;
            }
        };
        X.insert(tmp);
    };
    cout << X.size() << endl;
}