using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("insert number of people each family");

        int p=int.Parse(Console.ReadLine());

        int count=0;

        int f=0;

        f=f+p;

        while (p!=0)

        {

            if ( p>=6)

            count++;

            Console.WriteLine("insert number of people each family({0})" ,f);

            p=int.Parse(Console.ReadLine());

            f=f+p;

        }

            Console.WriteLine("people in average in every family=" +(f/count));

    }

}