#include <iostream>
#include <cstdio>
#define NMAX 20

using namespace std;

int sol[NMAX], col[NMAX], pdp[NMAX*2], pds[NMAX*2], nrsol, n;

void afisare()
{
    for (int i=1; i<=n; i++)
        printf("%d ", sol[i]);
    printf("\n");
}

void bt(int k)
{
    if (k==n+1)
    {
        if (++nrsol==1)
            afisare();
        return;
    }
    for (int i=1; i<=n; i++)
    {
        if (!col[i] && !pdp[n+k-i] && !pds[k+i-1])
        {
            col[i]=pdp[n+k-i]=pds[k+i-1]=1;
            sol[k]=i;
            bt(k+1);
            col[i]=pdp[n+k-i]=pds[k+i-1]=0;
        }
    }
}

int main()
{
    freopen("damesah.in", "r", stdin);
    freopen("damesah.out", "w", stdout);
    scanf("%d", &n);
    bt(1);
    printf("%d", nrsol);

    return 0;
}