Submission #122465

---

Source Code Expand

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

    class Program
    {
        static void Main(string[] args)
        {
            string[] s = Console.ReadLine().Split();
            int N = int.Parse(s[0]);
            int K = int.Parse(s[1]);
            List<double> R = new List<double>();
            s = Console.ReadLine().Split();
            for (int i = 0; i < s.Length; i++)
            {
                R.Add(double.Parse(s[i]));
            }
            R.Sort();

            double ans = 0.0;
            int start = N - K;

            for (int i = start; i < start + K; i++)
            {
                ans = (ans + R[i]) / 2.0;
            }

            Console.WriteLine(ans);
            Console.ReadLine();

        }
    }

Submission Info

Judge Result