using System;
using System.Linq;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine(); 
            var nums = input.Split(' ').Select(Int32.Parse).ToList();
            int extraMarks = nums.Max() + nums.Min();
            int result = (nums.Sum() - extraMarks) / (nums.Count() - 2);

            Console.WriteLine(result);
        }
    }
}