#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
    string s;cin>>s;
    vector<string> ret;
    for(int bit = 0; (1<<s.size()) > bit; bit++){
        int nwl = 0;
        int nwr = s.size()-1;
        string t = "";
        for(int i = 0; s.size() > i; i++){
            if(bit & (1<<i)){
                t.push_back(s[nwl]);
                nwl++;
            }else{
                t.push_back(s[nwr]);
                nwr--;
            }
        }
        ret.push_back(t);
    }
    sort(ret.begin(),ret.end());
    ret.erase(unique(ret.begin(),ret.end()),ret.end());
    cout << ret.size() << endl;
}