import java.util.Scanner;
public class NestedWhile
{
    public static void main(String[]args)
    {
         Scanner input = new Scanner(System.in);
         System.out.println("Masukan angka");
         int n = input.nextInt();
         int i=1,j;
         while(i<=n)
         {
             j=1;
             if (i==1 || i==n)
             {
               while(j<=n)
               {
                   System.out.print("* ");
                   j++;
               }
             }
             else
             {
               while(j<=n)
               {
                 if(j==1 || j==n)
                 {
                     System.out.print("* ");
                 }
                 else
                 {
                     System.out.print("  ");
                 }
                 j++;
               }
             }
             System.out.print("\n");
             i++;
         }
    }
}