import java.util.*;
public class cv5du4 {
    static {Locale.setDefault(Locale.US);}
    /*
     * Pokročilí: Vykreslete obdélník a v něm úhlopříčky.
     */
    public static void main(String[] args ) {
        Scanner scan=new Scanner(System.in);
        System.out.println(">>>  START "+Locale.getDefault()+"  # 1  \n");
        System.out.println("Zadej sirku obdelnika");
        int a = scan.nextInt();
        System.out.println("Zadej vysku obdelnika");
        int b = scan.nextInt();
        double u1 = 1;
        double u2 = a-2; 
        for (int i = 0;i<b;i++)
        {
            if ((i == 0)||(i == (b-1)))
            {
                for (int j = 0;j<a;j++)
                    System.out.print("*");
                System.out.println("");
                continue;
            }
            else
            {
                for (int j = 0;j<a;j++)
                {
                    if ((j == 0)||(j == (a-1))||(j == Math.round(u1))||(j == Math.round(u2)))
                        System.out.print("*");
                    else
                        System.out.print(" ");
                }
                System.out.println("");
            }
            u1 += (double) a/b;
            u2 -= (double) a/b;
        }
        System.out.println(">>>  STOP");
    }
}