/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		for(int i=1; i<1000; i++){
			for(int j=0; j<=i;j++){
			System.out.print((i+j)%2);
			}
			System.out.println();
		}
	
	}
}