#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main() {
    string S;
    cin >> S;
    long long pattern=1,div=1;
    vector<int> count(10);
    for(long long i=0;i<S.size();i++){
        count[ (int)(S[i]-'0') ]++;
    }

    for(int i=0;i<10;i++){
       if(count[i]){
            div*=count[i];
       }
    }

    for(long long i=S.size();i>0;i--){
            if(i==S.size()){
                pattern*=(i-count[0]);
            }else{
            pattern*=i;
            }
    }
    pattern/=div;
    cout << pattern <<endl;
    return 0;
}