using System;

​

public class Program

{

    public static void Main()

    {

        int i;

        int countmore = 0;

        double countavg = 0;

        int avg = 0;

        for (i = 0; i < 5; i++)

        {

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

            if (h > 170)

            {

                countmore++;

            }

            else if (h > 155 && h < 165)

            {

                countavg++;

                avg += h;

            }

        }

        Console.WriteLine(countmore);

​

        if (countavg > 0)

            Console.WriteLine("{0}", avg / countavg);

        else

            Console.WriteLine("error");

    }

}