import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int d = sc.nextInt();
        for(int i = 0; i < n; i++){
            for(int j = 0; j < n; j++){
                if(i == 0 || j == 0){
                    System.out.print(1);
                }else{
                    System.out.print(0);
                }
            }
            System.out.println();
        }
    }

}