List<Int64> minMax = new List<Int64>();
        for(int i=0; i < arr.Count(); i++)
        {
            var xx = arr.Select(x => Convert.ToInt64(x)).ToList();
            xx.Remove(arr[i]);
            minMax.Add(xx.Sum());
        }

        Console.WriteLine(minMax.Min() + " " + minMax.Max());