#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("damesah.in");
ofstream fout("damesah.out");

int sol, n;

int col[50], diag1[50], diag2[50], v[50];

void back(int k)
{
    if(k == n + 1)
    {
        if(sol == 0)
        {
            for(int i = 1; i <= n; i++)
                fout << v[i] << " ";
            fout << endl;
        }
        sol++;
        return;
    }
    for(int i = 1; i <= n; i++)
        if(col[i] == 0 && diag1[i - k + n] == 0 && diag2[2 * n - i - k + 1] == 0)
    {
        col[i] = 1;
        diag1[i - k + n] = 1;
        diag2[2 * n - i - k + 1] = 1;
        v[k] = i;
        back(k + 1);
        col[i] = 0;
        diag1[i - k + n] = 0;
        diag2[2 * n - i - k + 1] = 0;
    }
}

int main()
{
    fin >> n;
    back(1);
    fout << sol << endl;
    return 0;
}