#include<fstream>
using namespace std;
int n,l,c,k=0,t=0,i,j,p=0,a[280][280];
int main()
{    
	 ifstream f("lacate.in");
     ofstream g("lacate.out");
      f>>n;
     c=n-1;
      l=c*n/2;
        g<<l<<c;
		g<<"\n";
         l=1;
           while(t<n*c)
      {
		  for(i=l;i<=c;i++)
                a[l][i]=k+i-p;
      for(i=l+1;i<=n;i++)
                a[i][l]=k+i-1-p;
      k=a[l][c];
      t+=c+n-2*l+1;
      p++;
	  l++;
		   }
         for(i=1;i<=n;i++)
      {
		  for(j=1;j<=c;j++)
              g<<a[i][j];
      g<<"\n";
		 }
return 0;
}