import java.util.Scanner;

public class Main {

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
}
}
 import java.util.Scanner; Scanner java.util public class Main {

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
}
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
} main {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    } true {
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    } int H = sc.nextInt(); H sc.nextInt() sc.nextInt sc int W = sc.nextInt(); W sc.nextInt() sc.nextInt sc if ( H == 0 && W == 0 ) break; H == 0 && W == 0 H == 0 H 0 W == 0 W 0 break; for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        } int i = 0; int i = 0; i 0 i < H i H i++ i++ i {
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        } {
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        } for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            } int j = 0; int j = 0; j 0 j < W j W j++ j++ j {
                System.out.print("#");		       
            } {
                System.out.print("#");		       
            } System.out.print("#") System.out.print System.out System System.out "#" System.out.println() System.out.println System.out System System.out System.out.println() System.out.println System.out System System.out String[] args args public class Main {

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
}
} public class Main {

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
}
} Main
import java.util.Scanner;

public class Main {

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(true){
        int H = sc.nextInt();
        int W = sc.nextInt();
        if ( H == 0 && W == 0 ) break;
        for ( int i = 0; i < H; i++ ){
            for ( int j = 0; j < W; j++ ){
                System.out.print("#");		       
            }
        System.out.println();		       
        }
        System.out.println();
    }
}
}

