using System;

​

public class Program

{

    public static void Main()

    {

        int num = 0;

        int[] arr = new int[6];

        for (int i = 0; i < 6; i++)

        {

            arr[i] = int.Parse(Console.ReadLine());

            num = num + arr[i];

        }

​

        double avg = (double)(num / 7);

        for (int i = 0; i < 6; i++)

        {

            if ((double)((arr[i] + arr[i + 1]) / 2) > avg)

            {

                Console.Write(arr[i]);

                Console.WriteLine(',');

                Console.WriteLine(arr[i + 1]);

            }

        }

    }

}