[백준/2941/실버5] 크로아티아 알파벳

import java.util.Scanner;
 
class Main {
    private int solution(String a) {
       a = a.replace("c=", "1");
       a = a.replace("c-", "1");
        a =a.replace("dz=", "1");
        a =a.replace("d-", "1");
        a = a.replace("lj", "1");
        a = a.replace("nj", "1");
        a = a.replace("s=", "1");
        a = a.replace("z=", "1");
 
        return a.length();
    }
 
 
    public static void main(String[] args) {
        Main T = new Main();
        Scanner in = new Scanner(System.in);
        String a = in.next();
        System.out.println(T.solution(a));
 
    }
}