import java.util.*;

public class Forloop {


	public static void main(String[] args) {

		Scanner keyboard=new Scanner(System.in);

		System.out.println("Enter a positive integer under 10:");
		int input=keyboard.nextInt();
		int total=1;

		System.out.print("1");

		for(int i=2;i<=input;i++){

			total=total+i;
			System.out.print(" + "+i);
		}

		System.out.print(" ="+total);

	}

}