ASCIItable

using System;
using System.Text;

namespace ASCIItable
{
    class Program
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            int sumNumbers = 0;
            int sumSmallLetters = 0;
            int sumBigLetters = 0;
            int sumOthers = 0;
            StringBuilder numbers = new StringBuilder();
            StringBuilder smallLetters = new StringBuilder();
            StringBuilder bigLetters = new StringBuilder();
            StringBuilder others = new StringBuilder();

            for (int i = 0; i < n; i++)
            {
                char input = char.Parse(Console.ReadLine());
                int inputNumber = (int)input;
                if (48 <= inputNumber && inputNumber <=57)
                {
                    sumNumbers += inputNumber;
                    numbers.Append(input);
                }
                else if (97 <= inputNumber && inputNumber <= 122)
                {
                    sumSmallLetters += inputNumber;
                    smallLetters.Append(input);
                }
                else if (65 <= inputNumber && inputNumber <= 90)
                {
                    sumBigLetters += inputNumber;
                    bigLetters.Append(input);
                }
                else
                {
                    sumOthers += inputNumber;
                    others.Append(input);
                }
            }
            int max = Math.Max(Math.Max(sumNumbers, sumSmallLetters), Math.Max(sumBigLetters, sumOthers));

            if (sumNumbers == max)
            {
                Console.WriteLine($"Biggest ASCII sum is:{sumNumbers}");
                Console.WriteLine($"Combination of characters ASCII sum is:{numbers.ToString()}");
            }
            else if (sumBigLetters == max)
            {
                Console.WriteLine($"Biggest ASCII sum is:{sumBigLetters}");
                Console.WriteLine($"Combination of characters ASCII sum is:{bigLetters.ToString()}");
            }
            else if (sumSmallLetters == max)
            {
                Console.WriteLine($"Biggest ASCII sum is:{sumSmallLetters}");
                Console.WriteLine($"Combination of characters ASCII sum is:{smallLetters.ToString()}");
            }
            else
            {
                Console.WriteLine($"Biggest ASCII sum is:{sumOthers}");
                Console.WriteLine($"Combination of characters ASCII sum is:{others.ToString()}");
            }
        }
    }
}