open System

let () =
    let n = stdin.ReadLine ()

    let n2 = n |>
             (fun n -> n.Replace("hamu", "1")) |>
             (fun n -> n.Replace("ham", "0")) |>
             (fun n -> Convert.ToInt32(n, 2)) |>
             ( * ) 2 |>
             (fun n -> Convert.ToString(n, 2)) |>
             (fun n -> n.Replace("1", "hamu")) |>
             (fun n -> n.Replace("0", "ham"))

    printfn "%s" n2