open Printf
open Scanf

let solve a b c k =
  let rec f x y z = if x < y then (y, z) else f x (y * 2) (z + 1) in
  let (b2, k2) = f a b 0 in
  let (_, k3) = f b2 c k2 in
  if k >= k3 then "Yes" else "No"

let () =
  scanf "%d %d %d %d " solve |> printf "%s\n"
