#4CountAllWords

import java.util.Scanner;

public class CountAllWords {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        String input = scan.nextLine();
        int wordCount = 0;
        String[] words = input.split("\\W+");

        for (String word : words) {
            wordCount++;
        }

        System.out.println(wordCount);
    }
}