let solve a s =
  let aarr = Array.init (String.length a) (fun i -> a.[i])
  and sarr = Array.init (String.length s) (fun i -> s.[i]) in
  let ansArr = Array.map
    (function
      | '0' .. '9' as c -> int_of_char c |>  fun i -> aarr.(i - 48)
      | c -> c)
    sarr
  in
  String.init (Array.length ansArr) (fun i -> ansArr.(i))

let () =
    let a = read_line()
    and s = read_line() in
    solve a s |> print_endline