object Main extends App {
    var a = readInt
    var num = readLine
    var max = 0
        var sum = sum + num.split(" ")(0).toInt
    for {j <- 1 to a - 1}
        sum = sum + num.split(" ")(j).toInt
        if (max < num.split(" ")(j).toInt) {
            max = num.split(" ")(j).toInt
        }
    }
    if (max < sum - max) {
        println("Yes");
    } else {
        println("No");
    }
}