task03_bnoi_45

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

namespace Task03
{
    class Task03
    {
        static void Main(string[] args)
        {
            uint m = uint.Parse(Console.ReadLine());
            uint n = uint.Parse(Console.ReadLine());
            List<uint> evenNumbers = new List<uint>();
            if ((0 < m) && (m < n) && (n < 2000000000))
            {
                for (uint i = m; i <= n; i++)
                {
                    if (i % 2 == 0)
                        evenNumbers.Add(i);
                }
                uint sum = 0;
                int count = 0;
                foreach (var item in evenNumbers)
                {
                    sum += item;
                    count++;
                }
                decimal result = sum / count;
                Console.WriteLine(result);
            }
            else
                Console.WriteLine("Bad Input!");
        }
    }
}