java10.java

//hackerrank
//java string token problem
//solution


import java.io.*;


import java.util.*;



public class Solution {



    public static void main(String[] args) {


        Scanner scan = new Scanner(System.in);


        String s = scan.nextLine();


       s.trim();


      StringTokenizer st = new StringTokenizer(s,("[_\\@!?.', ]"));


        int x = st.countTokens();


        System.out.println(x);


        while(st.hasMoreTokens()){


            System.out.println(st.nextToken());


        }


        scan.close();


    }


}