Scanf.scanf "%s" (fun s ->
    let b = Array.init 8 (fun _ -> Scanf.scanf " %s" (fun b -> b)) in
    let c = Array.fold_left (fun acc v ->
        let rec loop i acc =
            if i = 8 then acc else
                let acc = if v.[i] = '.' then acc + 1 else acc in
                loop (i + 1) acc
        in
        loop 0 acc
    ) 0 b
    in
    let snot = function
        | "oda" -> "yukiko"
        | _ -> "oda"
    in
    print_endline @@ if c mod 2 = 0 then s else (snot s)
)