import java.io.File;
import java.util.HashSet;
import java.util.Scanner;
import java.io.FileNotFoundException;

public class ZadanieDwaPliki {

	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
		Scanner skan1 = new Scanner(new File("plik1.txt"));
		Scanner skan2 = new Scanner(new File("plik2.txt"));
		HashSet<String> tab1 = new HashSet<String>();
		HashSet<String> tab2 = new HashSet<String>();
		while (skan1.hasNextLine()) {
			tab1.add(skan1.nextLine());
		}
		while (skan2.hasNextLine()) {
			tab2.add(skan2.nextLine());
		}
		HashSet<String> wspolne = new HashSet<String>(tab1);
		wspolne.retainAll(tab2);
		System.out.println("Wspólne " + wspolne);
		HashSet<String> roznica = new HashSet<String>(tab1);
		roznica.removeAll(tab2);
		System.out.println("Różnica " + roznica);
	}
}