
import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner a = new Scanner(System.in);
		int h = 1;
		int w = 1;
		while(h > 0 && w > 0){
		h = a.nextInt();
		w = a.nextInt();
		for(int i = 0;i < h;i++){
			for(int j = 0;j < w;j++){
				System.out.print("#");
			}
			if(h != 0 && w != 0)
			System.out.println();
		}
		if(h != 0 && w != 0)
			System.out.println();
		}
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz