import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

  public static void main(String[] args) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {

  public static void main(String[] args) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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 {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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();
    }
  } BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); reader new BufferedReader(new InputStreamReader(System.in)) String readValue; readValue while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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();
    } (readValue = reader.readLine()) != null (readValue = reader.readLine()) readValue reader.readLine() reader.readLine reader null {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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 = Integer.parseInt(readValue.split(" ")[0]); h Integer.parseInt(readValue.split(" ")[0]) Integer.parseInt Integer readValue.split(" ")[0] readValue.split(" ") readValue.split readValue " " 0 int w = Integer.parseInt(readValue.split(" ")[1]); w Integer.parseInt(readValue.split(" ")[1]) Integer.parseInt Integer readValue.split(" ")[1] readValue.split(" ") readValue.split readValue " " 1 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) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

  public static void main(String[] args) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    String readValue;
    while ((readValue = reader.readLine()) != null) {
      int h = Integer.parseInt(readValue.split(" ")[0]);
      int w = Integer.parseInt(readValue.split(" ")[1]);
      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();
    }
  }

}