import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class _05_CountAllWords {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String input = sc.nextLine();
        String textRegEx = "\\w+";
        Pattern textPattern = Pattern.compile(textRegEx);
        Matcher matcher = textPattern.matcher(input);
        int counter = 0;

        while(matcher.find()){
            counter++;
        }
        System.out.println(counter);

//      OR
//      String[] allWords = input.split("\\W+");
//      System.out.println(allWords.length);
    }

}