import scala.math

object Main extends App {
  val sc = new java.util.Scanner(System.in)
  def divisors(n: Int): List[Int] =
    for (i <- (1 to n).toList if n % i == 0) yield i

  var n = sc.nextInt()
  var d = Array.fill(n)(sc.nextInt()).sorted
  println(if(d(n-1) < d.sum-d(n-1)) "Yes" else "No")
}
