fun readInt () =
    valOf (TextIO.scanStream (Int.scan StringCvt.DEC) TextIO.stdIn)


fun readStr () =
    let
        fun scan reader stream = SOME (StringCvt.splitl (not o Char.isSpace) reader (StringCvt.skipWS reader stream))
    in
        valOf (TextIO.scanStream scan TextIO.stdIn)
    end

fun findCIndex [] = ~1 
  | findCIndex (#"c"::tl) = 0
  | findCIndex (_::tl) = 1 + findCIndex tl


val () =
    let
        val n = readInt ()
        val s = readStr ()

        val i = findCIndex (String.explode s)
        val dropped = List.drop (String.explode s, i + 1)
        val ans = "UEC" ^ (String.implode dropped)
    in
        print (ans ^ "\n")
    end