using System;

public class Program

{

    public static void Main()

    {

        int max=0; int min=100; double sum=0;

        for (int i=0;i<30;i++)

        {

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

            string name=Console.ReadLine();

            sum=sum+grade;

            if (max<grade)

                Console.WriteLine(max=grade);

            else if (min>grade)

                Console.WriteLine(min=grade);

        }

            Console.WriteLine("max grade"+max);

            Console.WriteLine("min grade"+min);

            Console.WriteLine(sum/30);

    }

}