using System;

public class Program

{

    public static void Main()

    {

        var input = Console.ReadLine();

        var result = GetWordsAmount(input);

        Console.WriteLine(result);

    }

    static int GetWordsAmount(string message)

    {

        var result = 0;

​

        bool wasSpace = true;

​

        for (int charIndex = 0; charIndex < message.Length; charIndex++)

        {

            if(char.IsWhiteSpace(message[charIndex]))

            {

                wasSpace = true;

            }

            else

            {

                if (wasSpace)

                {

                    result++;

                    wasSpace = false;

                }

            }

        }

​

        return result;

    }

}