fun member x nil = false
  | member x (h::tl) =
    if x = h
    then true
    else member x tl


fun readInt () =
    valOf (TextIO.scanStream (Int.scan StringCvt.DEC) TextIO.stdIn)


fun readStr () =
    let
        fun scan reader stream = SOME (StringCvt.splitl (not o Char.isSpace) reader (StringCvt.skipWS reader stream))
    in
        valOf (TextIO.scanStream scan TextIO.stdIn)
    end


val () =
    let
        val n = readInt ()
        val s_s_list = List.tabulate (n, fn _ => [readStr (), readStr(), readStr(), readStr()])

        val ans = List.foldl (fn (s_s, acc) =>
                                 if member "akai" s_s andalso
                                    member "marui" s_s andalso
                                    member "okii" s_s andalso
                                    member "umai" s_s
                                 then acc + 1
                                 else acc)
                             0
                             s_s_list
    in
        print (Int.toString ans ^ "\n")
    end