#include <bits/stdc++.h>

using namespace std;

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

int st[25], n;
int viz[25], dp[25], ds[25];
int C;

void Afisare()
{
    C++;
    if(C==1)
    {
        for(int i = 1; i <= n; i++)
            fout << st[i] << " ";
        fout << "\n";
    }
}

inline int Valid(int i, int j)
{
    if(viz[j] == 1) return 0;
    if(dp[n-j+i] == 1) return 0;
    if(ds[i+j-1] == 1) return 0;
    return 1;
}

void Back(int top)
{
    if(top == n+1) Afisare();
    else
        for(int j = 1; j <= n; j++)
            if(Valid(top, j))
    {
        st[top] = j;
        viz[j] = 1;
        dp[n-j+top] = 1;
        ds[top+j-1] = 1;
        Back(top+1);
        ds[top+j-1] = 0;
        dp[n-j+top] = 0;
        viz[j] = 0;
    }
}

int main()
{
    fin >> n;
    Back(1);
    fout << C;
    return 0;
}