Half sum element

using System;


namespace Half_sum_element
{
    class Program
    {
        static void Main()
        {
            var n = int.Parse(Console.ReadLine());
            var sum = 0;
            var max = 0;
            int[] num = new int[n];
            int ind = 0;
            int k = 0;
            for (int i = 0; i < n; i++)
            {
                num [i] = int.Parse(Console.ReadLine());
                if(num[i]>max)
                {
                    max = num[i];
                    ind = i;
                }
                sum=sum+num[i];
            }
            for (int i = 0; i < n; i++)
            {
                if(ind!=i)
                {
                    k=k+num[i];

                }
            }
            if (k == max)
            {
                Console.WriteLine("Yes\nSum = " + max);
            }
            else
            {
                var m = Math.Abs(max-k);
                Console.WriteLine("No\nDiff = " + m);
            }
        }
    }
}