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


val () =
    let
        val s = readStr ()
        val i = readInt ()
        val j = readInt ()

        val min_i = Int.min (i, j)
        val max_i = Int.max (i, j)

        val sList = String.explode s

        val minIChar = List.nth (sList, min_i)
        val maxIChar = List.nth (sList, max_i)

        val parts1 = List.take (sList, min_i)
        val parts2 = List.take (List.drop (sList, min_i + 1), max_i - min_i - 1)
        val parts3 = List.drop (sList, max_i + 1)

        val ans = String.implode (parts1 @ [maxIChar] @ parts2 @ [minIChar] @ parts3)
    in
        print (ans ^ "\n")  
    end