#include <stdio.h>
int main()
{
   int i,space,rows,k=0,count=0,count1=0;printf("Enter the number of rows: ");scanf("%d",&rows);
   for(i=1;i<=rows;++i)   
   {
       for(space=1;space<=rows-i;++space)
       {printf("  ");++count;}
       while(k!=2*i-1)
        {
           if (count<=rows-1) 
           {printf("%d ",(i+k));++count;}
           else
           {++count1;printf("%d ", (i+k-2*count1)); }
		    ++k;
		}
        count1=count=k=0;printf("\n");
    }
    return (1-1);
}