import java.util.Scanner;

public class NumberPyramidFloydTriangle {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());
        int counter = 1;
        boolean found = false;
        for (int i = 1; i <=number; i++) {
            for (int j = 1; j<=i; j++) {
                System.out.printf("%d ",counter++);
                if (counter>number){
                    found=true;
                    break;
                }
            }
            if (found){
                break;
            }
            System.out.println();
        }
    }
}