Submission #122592

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Source Code Expand

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

namespace Program
{
    class Program
    {
        static void Main(string[] args)
        {
            var array = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string,int> (s => int.Parse(s)));
            var list = Array.ConvertAll(Console.ReadLine().Split(' '), new Converter<string, double>(s => double.Parse(s))).ToList<double>();
            double rate = 0;
            list.Sort();
            for (int i = array[1]; i > 0; i--)
                rate = (rate + list[array[0] - i]) / 2;
            Console.WriteLine("{0}", rate);
        }
    }
}

Submission Info

Judge Result