#include?<math.h>
int?main()
{int?n,i,j;
scanf("%d",&n); printf("%*d\n",n,n); for(i=2-n;i<n-1;i++) {if(i)printf("%*c",abs(i),'?'); for(j=n;j>1+abs(i);j--)printf("%d",j);
for(;j<=n;j++)printf("%d",j);
printf("\n"); }? if(n>1)printf("%*d\n",n,n); return?0;}