using System;

class Program
{
    static void Main()
    {
        int t = int.Parse(Console.ReadLine());
        string[] s = Console.ReadLine().Split(' ');
        Array.Sort(s);
        int r = 0;

        for (int i = 0; i < (t / 2)+1; i++)
        {
            r += ((int.Parse(s[i]) / 2) +1);
        }
        Console.WriteLine(r);
    }
}

Edited by author 16.06.2012 19:10

Edited by author 16.06.2012 19:11

You must input all the array first, and only then work with it

Edited by author 10.12.2016 03:26