let count_matches str s = let r = Str.regexp_string s and len_str = String.length str and len_s = String.length s in let rec count_matches' i result = if i >= len_str then result else try let idx = Str.search_forward r str i in count_matches' (idx + len_s) (result + 1) with Not_found -> result in count_matches' 0 0 let () = let s = read_line () in let lf = count_matches s "*)" and rf = count_matches s "(*" in Printf.printf "%d %d\n" lf rf