#include <bits/stdc++.h>


using namespace std;
int main(){
    vector <int> a;
    int n, k = 0;
    string s;
    a.resize(26,0);
    cin >> s;
    for (int i = 0; i < s.size(); i++)
       a[int(s[i] - 'A')]++;
    vector <long long> fac;
    fac.resize(15);
    fac[0] = 1;
    for (int i = 0; i < 15; i++)
       fac[i] = fac[i - 1] * i;
    long long ans = fac[s.size()];
    for (int i = 0; i < 26; i++)
        ans /= fac[a[i]];
    cout << ans;
}