Login

import java.util.Scanner;

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

        String user = scanner.nextLine();
        String pass = new StringBuilder(user).reverse().toString();

        int counter = 0;
        while (true){
            String trying = scanner.nextLine();
            counter++;
            if (trying.equals(pass)){
                System.out.printf("User %s logged in.%n", user);
                return;
            }
            if (counter == 4) {
                System.out.printf("User %s blocked!%n", user);
                return;
            }
            System.out.println("Incorrect password. Try again.");

        }


    }
}