#include <iostream>
#include <algorithm>
#include <string>
#include <set>
using namespace std;

set<string> deque_strings;

void deque_of_string(string rest, string building){
    if(rest == ""){
        deque_strings.insert(building);
    }else{
        building.push_back(rest.back());
        deque_of_string(rest.substr(0, rest.size() - 1), building);
        building.back() = rest[0];
        deque_of_string(rest.substr(1, rest.size()), building);
    }
}

int main(){
    string S;
    cin >> S;
    deque_of_string(S, "");
    cout << deque_strings.size() << endl;
}