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

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