#include <iostream>
#include <fstream>

using namespace std;

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

int a[15],c[15],dp[30],ds[30],n,nr_sol;

void afis()
{
    for(int i=1;i<=n;i++)
        fout<<a[i]<<" ";
    fout<<"\n";
}

void rez(int ind)
{
    if(ind==n+1)
    {
        nr_sol++;
        if(nr_sol==1)
            afis();
    }
    else
    {
        for(int i=1;i<=n;i++){
            if(!c[i] && !dp[n+ind-i] && !ds[ind+i-1])
            {
                c[i]=dp[n+ind-i]=ds[ind+i-1]=1;
                a[ind]=i;
                rez(ind+1);
                c[i]=dp[n+ind-i]=ds[ind+i-1]=0;
            }
        }
    }
}

int main()
{
    fin>>n;
    rez(1);
    fout<<nr_sol<<endl;
    fin.close();
    fout.close();
    return 0;
}