#include<bits/stdc++.h>
using namespace std;

int ans=0;
string s;
map<string,int> ma;

void solve(string now,int ind){
    int N=s.size();
    if(ind==N/2){
        ma[now]++;
        return;
    }
    string i=now+s[N-1-ind];
    string j=s[N-1-ind]+now;
    string k=now+s[ind];
    string l=s[ind]+now;
    //cout << i << " " << j << " " << k << " " << l << endl;
    solve(i,ind+1);
    solve(j,ind+1);
    solve(k,ind+1);
    solve(l,ind+1);
}

int main(){
    cin >> s;
    solve("",0);
    cout << ma.size() << endl;
}