백준 #10821번 정수의 개수

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String s = sc.next();
		int count = 1;
		
		for(int i = 0; i < s.length(); i++) {
			if(s.charAt(i) == ',') {
				count++;
			}
		}
		System.out.println(count);
		sc.close();
	}
}