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

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

void solve(string s,string t){
    int N=s.size();
    if(N==0){
        ma[t]++;
        return;
    }
    string i=t+s[0];
    string j=t+s[N-1];
    //cout << i << " " << j << " " << k << " " << l << endl;
    solve(s.substr(1,N-1),i);
    solve(s.substr(0,N-1),j);
}

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