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#include <fstream>
using namespace std;
ifstream fin("damesah.in");
ofstream fout("damesah.out");
int st[25],n;
int viz[25],dp[50],ds[50];
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]) 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);
viz[j]=0;
dp[n-j+top]=0;
ds[top+j-1]=0;
}
}
}
int main()
{
fin >> n;
Back(1);
fout << c;
fin.close();
fout.close();
return 0;
}