HalfSumElements

using System;

namespace Half_Sum_Element
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            var sum = 0;
            var max = int.Parse(Console.ReadLine());
            var result = string.Empty;

            for (int i = 0; i < n - 1; i++)
            {
                var num = int.Parse(Console.ReadLine());

                if (num >= max)
                {
                    sum += max;
                    max = num;
                }
                else
                {
                    sum += num;
                }
            }
            if (max == sum)
            {
                Console.WriteLine("Yes sum = {0}", sum);
            }
            else
            {
                var diff = Math.Abs(sum - max);
                Console.WriteLine("No diff = {0}", diff);
            }
        }
    }
}