import io.{lines, stdin}

def rot13( s ) =
  buf = StringBuilder()

  for c <- s
    if isalpha( c )
      n = ((ord(c) and 0x1F) - 1 + 13)%26 + 1

      buf.append( chr(n or (if isupper(c) then 64 else 96)) )
    else
      buf.append( c )

  buf.toString()

def rot13lines( ls ) =
  for l <- ls
    println( rot13(l) )

if _name_ == '-main-'
  if args.isEmpty()
    rot13lines( stdin() )
  else
    for f <- args
      rot13lines( lines(f) )