using System;

public class Program

{

    public static int leftSum = 1;

    public static void Main()

    {

        int foundNumber = 0;

        for(int i = 2; foundNumber<=10; i++)

        {

            leftSum += i;

            int y = getYSum(i, leftSum);

            if(y != 0)

            {

                foundNumber++;

                Console.WriteLine(i.ToString() + "," + y.ToString());

            }

        }

    }

​

    public static int getYSum(int x, int leftSum)

    {

        double ySum = x+1;

        int initialY = x+1;

        while (ySum < leftSum)

        {

            initialY++;

            ySum += initialY;

        }

        if(ySum == leftSum)

            return initialY;

        else

            return 0;

    }

}