open Str
let () =
  Scanf.scanf "%s\n" @@ fun s ->
  let slst = Str.split (Str.regexp " ") s in
  let (e, w) = List.fold_left (fun (e, w) x -> if x = "O" then (e+1, w) else (e, w+1)) (0, 0) slst in
  Printf.printf "%s\n" (if e < w then "East" else if e > w then "West" else "NA")