{}
import java.util.*;
class Pattern {
public static void main(String[] args)
{
Scanner sc= new Scanner(System.in);
System.out.print("enter the value of row =");
int n=sc.nextInt();
for(int i=1; i<=n; i++){
for(int j=1; j<=i; j++){
if((i+j)%2==0)
System.out.print(1+" ");
else
System.out.print(0+" ");
}
System.out.println();
}
}
}