#include<stdio.h>
#include<conio.h>
#include<dos.h>
void main ()
   {
       int n,i,x,y;
       clrscr();
       printf("\n get n \n");
       scanf("%d",&n);
       clrscr();
       x=1;
       y=n/2+1;
       for(i=1;i<n*n+1;i++)
	   {
	       gotoxy(4*y,x);
	       textcolor(i);
	       cprintf("%d",i);
	       delay(200);
	       if(i%n==0)
		      x=x+1;
	       else
		   {
		      x=x-1;
		      y=y+1;
		   }
	       if(x<1)
		      x=n;
	       if(y>n)
		      y=1;
	   }
	   flushall();
	   getchar();
   }