open Printf
open Scanf

let a, b, c = scanf "%d %d %d\n" (fun a b c -> a, b, c)
let k = scanf "%d" (fun k -> k)

let run () =
    let a = ref a in
    let b = ref b in
    let c = ref c in
    let step () =
        if !a >= !b then b := !b * 2
        else if !b >= !c then c := !c * 2
        else ()
    in
    let check () = !a < !b && !b < !c in
    for i = 1 to k do
        step()
    done;
    print_endline (if check () then "Yes" else "No")

let () = run ()