import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		sc.close();
		String[] st = s.split(" ");
		int sum = 0 ;
		for (int i = 0; i < st.length; i++) {
			sum += st[i].length();
		}
		System.out.println(sum);
	}
}