import java.util.*;
public class nauka{
  public static void main(String[] args){

	  Scanner sk = new Scanner(System.in);
	  String haslo,login;

	System.out.println("podaj login");
	login =	sk.nextLine();

	System.out.println("podaj haslo");
	haslo =	sk.nextLine();

		 if((login=="ja") && (haslo=="kaa"))
	{
		System.out.println(" prawidłowe dane! ");

	}

	 else if ((login!="ja") ||(haslo!="kaa"))
	{
		System.out.println("nieprawidłowe dane! ");

	}

	}
	}