import java.util.Scanner

fun main(args: Array<String>) {
  val sc = Scanner(System.`in`)
  val N = sc.nextInt()
  val L = (1..N).map { sc.nextLong() }
  val maxL = L.max()!!
  val total = L.sum() - maxL
  println(if (maxL < total) "Yes" else "No")
}