import java.io.*;
import java.util.*;

public class Main {
	public static void main(String[] args) throws FileNotFoundException
	{
		Set<String> words = new HashSet<>(); 
	
		Scanner in = new Scanner(new File("smallFile.txt"));
		//Scanner in = new Scanner(new File("alice_in_wonderland.txt"));
		
		while (in.hasNext()) {
			String word = in.next();
			words.add(word);
		}		
		
		System.out.println(words); //Output all distinct words
		
		in.close();
	}

}


// /* Starter code */
// import java.util.*;
// import java.io.*;

// public class Main {
// 	public static void main(String[] args) throws FileNotFoundException {
// 		Scanner in = new Scanner(new File("smallFile.txt"));
// 		ArrayList<String> words = new ArrayList<>();

// 		while (in.hasNext()) {
// 			String word = in.next();
// 			words.add(word);
// 		}
// 		System.out.println(words);
// 		in.close();
// 	}
// }