using System;

using System.Linq;

using System.Text;

using System.Text.RegularExpressions;

​

namespace RageQuit

{

    public class RageQuit

    {

        public static void Main()

        {

            string input = Console.ReadLine();

​

            string delimitingPattern = @"[\D]+[0-9]+"; // We know that we want all words that end with a digit - e.g. asd5, @6, golf4, so this patters says "anything but a digit one or more times([\D]) and one or more digits after that([0-9]+)".

​

            string numPattern = @"[\d]+"; // Next we want to get the count of the repetitions of a word - e.g. asd4 - we should repeat "asd" 4 times. This pattern will give us any digit one or more times.

​

            string messagePattern = @"[\D]+"; // The last part will be the message itself. It can contains everything but a digit.

​

            MatchCollection messageWithRepCount = Regex.Matches(input, delimitingPattern); // We create a match collection that will hold all words with their counts - e.g. "asd3", "golf4", "%@7".

​

            StringBuilder outputMessage = new StringBuilder(); // We create a StringBuilder that will hold our result that will be printed.

​

            foreach (Match message in messageWithRepCount)

            {

                Match repetition = Regex.Match(message.ToString(), numPattern); // We use the number pattern to get the repetitions from each entry in our match collection that holds all words - e.g. asd5 - we get 5, golf4 - we get 4.

​

                int repetitions = int.Parse(repetition.ToString()); // Converting the number to int (it was of type Match).

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                Match messageText = Regex.Match(message.ToString(), messagePattern); // We have the repetitions and now we take the text that we should repeat - e.g. asd5 - we take "asd", golf4 - "golf".

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                string dummyMessage = messageText.ToString(); // Converting the message to string (it was of type Match).

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                for (int i = 0; i < repetitions; i++) // Adding our message to our StringBuilder with the repetitions number that we already have - e.g. if we have "asd3" we will have in our StringBuilder "asdasdasd".

                {

                    outputMessage.Append(dummyMessage);

                }

            }

​

            string output = outputMessage.ToString().ToUpper(); // Converting the output to string (it was StringBuilder) and to capital letters.

            int uniqueSymbolsCount = output.Distinct().Count(); // Getting the number of unique symbols.

​

            Console.WriteLine($"Unique symbols used: {uniqueSymbolsCount}");

            Console.WriteLine(output);

        }

    }

}

​