using System;

public class Program

{

    public static void Main()

    {

        string password;

        do

        {

            Console.WriteLine("Enter the password");

            password = Console.ReadLine();

            Console.WriteLine("Wrong, do it again");

        }

        while (password != "LFT");

        if (password == "LFT")

        {

            Console.WriteLine("Ok");

        }

    }

}