import java.util.*;

public class Solution {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);

String s = scan.nextLine(); // s = s.trim();

// Split by commas, question marks, spaces, and apostrophes String[] s1 = s.split("[^a-zA-Z0-9]+");

int nonEmptyCount = 0; for (String word : s1) { if (!word.isEmpty()) { nonEmptyCount++; } }

// Print the word count first System.out.println(nonEmptyCount);

// Print each non-empty word for (String word : s1) { if (!word.isEmpty()) { System.out.println(word); } }

This Worked for me. scan.close();

} }