#include <fstream>
using namespace std;
ifstream f("damesah.in");
ofstream g("damesah.out");
int n,i,bsol[60],used[60],diag1[60],diag2[60],sol;
long long cnt;

void bkt(int k)
{

    if(k>=n+1)
    {
        ++cnt;
        if(sol==0)
        {
            for(int j=1;j<=n;j++)
            {
                g<<bsol[j]<<" ";
            }
            sol=1;
        }
    }
    else
    {
        for(int i=1;i<=n;++i)
        {
            int d1=n+k-i+1;
            int d2=k+i-1;
            if(!used[i]&&!diag1[d1]&&!diag2[d2])
            {
                used[i]=1;
                diag1[d1]=1;
                diag2[d2]=1;
                bsol[k]=i;
                bkt(k+1);
                used[i]=0;
                diag1[d1]=0;
                diag2[d2]=0;
            }
        }
    }
}

int main()
{
    f>>n;
    bkt(1);
    g<<"\n"<<cnt;
    return 0;
}