let c = ref 0;;

let parse_gui_message () =
  let s = input_line stdin in
  match s with
  | "bouton" -> incr c; string_of_int !c
  | s -> "syntax error: " ^ s;;

let treat() =
  let answer = parse_gui_message() in
  output_string stdout answer;
  output_char stdout '\n';
  flush stdout;;

let computation_server () =
  try while true do treat () done
  with End_of_file -> exit 0;;