package textfiles;
import java.io.FileWriter;
import java.io.IOException;
import java.io.FileReader;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.BufferedReader;
import java.util.TreeSet;
import java.util.Iterator;




public class TreeSetTester {

	public static void main(String[] args) {
		BufferedReader br = null;
		PrintWriter out;
		try {
			TreeSet<String> tree = new TreeSet<String>();
			Iterator<String> iteratorTree = tree.iterator();
			String newLine;
			br = new BufferedReader(new FileReader("input.txt"));
			out = new PrintWriter(new BufferedWriter(new FileWriter("input.txt", true)));
			while ((newLine = br.readLine()) != null){
				System.out.println(newLine);
				String[]words = newLine.split(" ");
				for(int i  = 0; i<words.length; i++){
				tree.add(words[i]);
				}
			}
			while(iteratorTree.hasNext()){
				out.println(iteratorTree.next());
			}
			out.println(tree.size());
			System.out.println(tree.size());
		}catch(IOException e){
			e.printStackTrace();
		}finally{
			try{
				if(br !=null)br.close();
			}catch(IOException ex){
				ex.printStackTrace();
			}
		}

	}

}