Password door lock

repeat
 local e = 4
    repeat
       shell.run("clear")
        print("Password ?")
        local mdp = read("*")
         if mdp == ("admin") then
          e = 4
          print("Acces granted")
            redstone.setOutput("top",true)
              sleep(5)
               redstone.setOutput("top",false)
                shell.run("clear")
        else
           e = e - 1
          shell.run("clear")
         print("Try remaining : "..e)
        sleep(2)
       end
    until e < 1
           shell.run("clear")
          print("Computer locked for 25 sec")
     sleep(25)
 until e > 10