import scala.io.StdIn._

object Main extends App {
  val n = readInt()
  val l = readLine().split(" ").map(_.toInt).toSeq

  require(3 <= n && n <= 30)
  require(l.forall(i => 1 <= i && i <= 100))

  val m   = l.max
  val sum = l.sum

  if (sum - m > m) println("Yes")
  else println("No")
}
