03. Rage Quit

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace Extended
{

    class Program
    {

            static StringBuilder sb = new StringBuilder();
        public static void Main(string[] args)
        {
            string reg = @"(?<text>\D+)(?<count>\d+)";
            var input = Console.ReadLine();
            var match = Regex.Matches(input, reg);
            foreach (Match item in match)
            {
                string text = item.Groups["text"].Value;
                int count = int.Parse(item.Groups["count"].Value);
                Repeat(text, count);
            }
            string res = sb.ToString().ToUpper();
            Console.WriteLine("Unique symbols used: {0}", res.Distinct().Count());
            Console.WriteLine(res);

        }
        private static void Repeat(string text, int repeatCount)
        {
            for (int i = 0; i < repeatCount; i++)
            {
                sb.Append(text);
            }
        }
    }
}