Count Symbols

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace solutions
{
    class Program
    {
        public static void Main()
        {
            var input = Console.ReadLine();

            var result = new SortedDictionary<char, int>();

            foreach (var item in input)
            {
                if (!result.ContainsKey(item))
                {
                    result.Add(item, 0);
                }
                result[item]++;
            }

            foreach (var item in result)
            {
                Console.WriteLine($"{item.Key}: {item.Value} time/s");
            }
        }
    }
}