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) return;
      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) return;
      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) return;
      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) return;
      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) return;
      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) return;
      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) return; h == 0 && w == 0 h == 0 h 0 w == 0 w 0 return; 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) return;
      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) return;
      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) return;
      for(int i = 0; i<h; i++) {
        for(int j = 0; j<w; j++) {
          System.out.print("#");
        }
        System.out.println();
      }
      System.out.println();
    }
  }
}