#include<iostream.h>
#include<fstream.h>
ifstream in("permutari.in");
ofstream out("permutari.out");
using namespace std;




int x[100],pus[100],n,nr=0;

void Write()
{ for(int i=1;i<=n;i++) out<<x[i]<<" ";
  out<<endl;
  nr++;
}
void Perm(int k)
{  for(int i=1;i<=n;i++)
     if(!pus[i])
        { x[k]=i;
          pus[i]=1;
          if(k==n) Write();
          else Perm(k+1);
          pus[i]=0;
          } 
}

int main()
{ in>>n;
  Perm(1);
  out<<nr;
  system("pause");
  return 0;
}