/* 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
	{
    	int i=0, n = 50, term;
	    int sum=0;
    	while((term = (i*(i+1)+1)) < n) {
	    	System.out.print(term + " + ");
        	sum+=term;
    	    i++;
	    }
	}
}