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

int main() {
    long long n, zbir = 0;
    cin >> n;
    int niza[n];
    for(int i = 0;i<=n;i++){
        niza[i] = i + 1;
    }
    do
    {
        int b = 0;
        for(int i = 0;i < n;i++){
            b = (b*10) + niza[i];


        }
        zbir += b;




    }while(next_permutation(niza, niza + n));

    cout << zbir;
}