import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Problem05CountWords {
    public static void main(String[] args) {

        BufferedReader input = new BufferedReader(new InputStreamReader(
                System.in));
        String line;
        int count = 0;
        try {
            while ((line = input.readLine()) != null && line.length() != 0) {
                String[] words = line.split("\\W+");
                count += words.length;
            }
        } catch (IOException e) {

            System.out.println("Tegav si brat");
        }
        System.out.println(count);
    }
}