import scala.io.StdIn._

object Main extends App {
  val n = readInt()
  val lengths = readLine().split(' ').map(_.toInt).toSeq
  
  var maxLength: Int = 0
  val sum = lengths.foldLeft(0) { case(s, l) =>
    maxLength = if (maxLength < l) l else maxLength
    s + l
  }
  
  val result = if (maxLength < sum - maxLength) "Yes" else "No"
  println(result)
}