using System;

public class Program

{

    public static void Main()

    {

        string line = "";

        int length = 0;

        while(true)

        {

            line = Console.ReadLine();

            Console.WriteLine("line: " + line);

            //if(string.IsNullOrEmpty(line) == true)

            if(line == null)

            {

                Console.WriteLine("to break");

                break;

            }

            else

            {

                Console.WriteLine("in cycle");

                if(line.Substring(0, 1) != "+" && line.Substring(0, 1) != "-")

                {

                    Console.WriteLine("in if");

                    int index = line.IndexOf(':') + 1;

                    int messageLength = line.Length - index;

                    length += messageLength;

                    Console.WriteLine("index: " + index);

                    Console.WriteLine("messageLength: " + messageLength);

                    Console.WriteLine("length: " + length);

                }

            }

        }

        Console.WriteLine("out of cycle");

        Console.WriteLine(length);

    }

}