import java.io.IOException;
import java.util.Scanner;
public class Main {

	public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	}

} import java.io.IOException; IOException java.io import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	}

} Main public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	} main {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	} int a a b b c c d d e; e a=1 a 1 b=1 b 1 e=1 e 1 Scanner sc = new Scanner(System.in); sc new Scanner(System.in) while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       } a!=0 || b!=0 a!=0 a 0 b!=0 b 0 {
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       } a = sc.nextInt() a sc.nextInt() sc.nextInt sc b = sc.nextInt() b sc.nextInt() sc.nextInt sc c = 1 c 1 d = 1 d 1 if (e != 1){
    	   System.out.println();
       } e != 1 e 1 {
    	   System.out.println();
       } System.out.println() System.out.println System.out System System.out while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       } c<=a c a {
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       } while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   } d<=b d b {
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   } if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   } d!=b d b {
    			   System.out.print("#");
    		   } System.out.print("#") System.out.print System.out System System.out "#" {
    			   System.out.println("#");
    		   } System.out.println("#") System.out.println System.out System System.out "#" d = d+1 d d+1 d 1 c = c+1 c c+1 c 1 d = 1 d 1 e=e+1 e e+1 e 1 String[] args args public class Main {

	public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	}

} public class Main {

	public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	}

} Main
import java.io.IOException;
import java.util.Scanner;
public class Main {

	public static void main(String[] args) throws Exception {
		// TODO ?????????????????????????????????????????????
	   int a,b,c,d,e;
	   a=1;b=1;e=1;
       Scanner sc = new Scanner(System.in);
       while (a!=0 || b!=0){
       a = sc.nextInt();
       b = sc.nextInt();
       c = 1;
       d = 1;
       if (e != 1){
    	   System.out.println();
       }
       while(c<=a){
    	   while(d<=b){
    		   if(d!=b){
    			   System.out.print("#");
    		   }else{
    			   System.out.println("#");
    		   }
    		   d = d+1;
    	   }
    	   c = c+1;
    	   d = 1;
       }
       e=e+1;
       }
	}

}