Scanf.scanf "%d" (fun n ->
    let rec gcd a b = if b = 0 then a else gcd b (a mod b) in
    let a = Array.init n (fun _ -> Scanf.scanf " %d" (fun a -> a)) in

    let rec loop i acc =
        if i = n then acc else loop (i + 1) (gcd acc a.(i))
    in
    let g = loop 1 a.(0) in
    Array.iteri (fun i v ->
        if i =0 then Printf.printf "%d"  (v / g)
                else Printf.printf ":%d" (v / g)) a;
    print_newline()
)