using System;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            string input = System.IO.File.ReadAllText("input.txt");

            ulong result = Decompress(input);

            Console.WriteLine(result);
        }

        private static ulong Decompress(string input)
        {
            ulong result = 0;

            for(int i = 0; i < input.Length; i++)
            {
                char character = input[i];

                if (character == '(')
                {
                    string current = input.Substring(i);
                    int indexOfClosingBracket = current.IndexOf(')');
                    string[] instruction = current.Substring(0, indexOfClosingBracket + 1).Split('x');

                    int numberOfCharacters = int.Parse(instruction[0].Substring(1));
                    int numberOfTimes = int.Parse(instruction[1].TrimEnd(')'));

                    //Get the next X number of characters.
                    string data = current.Substring(indexOfClosingBracket + 1, numberOfCharacters);

                    string decompressed = string.Empty;

                    //Repeat this string Y number of times.
                    for (int x = 0; x < numberOfTimes; x++)
                        decompressed += data;

                    result += (ulong)decompressed.Length;

                    //Skip to the end of the instruction.
                    i += indexOfClosingBracket + numberOfCharacters;
                }
                else
                    result++;
            }

            return result;
        }
    }
}