package hduoj;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;

//注意：空格后面要加上“+”否则只会以一个空格来split，要是有几个空格连在一起，空格也会算一个单词

public class hdoj_2072 {

    public static void main(String[] args) {

        String line = "";

        Scanner sc = new Scanner(System.in);

        while(true){

            line =  sc.nextLine();

            if(line.equals("#")) break;

            Map<String,Integer> the_different_word = new HashMap();

            String[] elements = line.split(" +");

            if(elements.length==0) {

                System.out.println(0);

                continue;

            }

//            new util().prinout(elements);

            for(String temp:elements){

                if(!the_different_word.containsKey(temp)){

                    the_different_word.put(temp,1);

                }

            }

            System.out.println(the_different_word.size());

        }

    }

}