import java.util.Scanner;
public class Main {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Number: ");
        int num = keyboard.nextInt();
        int sum = 0;
        System.out.println();

        for (int i = 1; i <= num; i++){
            System.out.println(i + " ");
            sum = (i*(i+1))/2;
        }
        System.out.println();
        System.out.println("The sum is " +sum+".");
    }
}