#include <stdio.h>
#include <stdlib.h>

int main()
{
       int n;
       scanf("%d",&n);
       int width=2*n-1
       if(n<=0|| n>=10) 
       {
           printf("invalid input\n");
       }
       for(int i=n;i>=1;i--){
           int count=2*i-1;
       }
       int spaces=(width-count)/2
       for(int s=0;s<spaces;s++){
       printf(" ")
       }
       for(j =0; j <count; j++)
       {
       printf(" %d", i);
       }
       printf("\n");
       }
      
       for(j = 0; j < count; j++)
       {
         printf("%d ", i);
       }
       printf("\n");
       }
       return 0;
}