using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var count = Convert.ToInt32(Console.ReadLine());
        var values = Console.ReadLine()
                        .Split(" ", count)
                        .Select(m => Convert.ToInt32(m))
                        .ToList();
        Console.WriteLine(GetMedian(values));
    }
    
    static decimal GetMedian(List<int> numbers)
    {
        var sortedNumbers = numbers.OrderBy(m => m).ToList();
        if (numbers.Count % 2 == 0)
        {
            // 偶数の場合は中央順位２個の算術平均
            var medians = numbers.OrderBy(m => m).Skip(numbers.Count / 2 - 1).Take(2).ToList();
            return Math.Round(((medians[0] + medians[1])) / 2m, 1, MidpointRounding.AwayFromZero); 
        }
        else
        {
            // 奇数個の場合は中央順位のデータ
            return numbers.OrderBy(m => m).ToList()[(numbers.Count / 2)];
        }
    }
}