object Q729 {
  def main(args: Array[String]) = {
    val chars = io.StdIn.readLine().toSeq
    val indexes = io.StdIn.readLine().split(' ').map(_.toInt).toSeq

    val i = indexes(0)
    val j = indexes(1)
    val answer = chars.updated(i, chars(j)).updated(j, chars(i)).mkString("")
    println(answer)
  }
}