#include<iostream>
#include<vector>
#include<set>
#include<string>
#include<algorithm>

using namespace std;

int main(){
    string s;
    cin >> s;
    vector<int> v;
    set<string> st;

    for(int i = 0; i < s.size(); i++) v.push_back(i);
    do{
        string t = "";
        for(auto i : v) t += s[i];
        st.insert(t);
    }while(next_permutation(v.begin(), v.end()));

    st.erase(s);
    cout << st.size() << endl;

    return 0;
}