import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int maxL =0;
		int sum = 0;
		for(int i=0; i<N; i++) {
			int L = sc.nextInt();
			//Lを合計する
			sum +=L;;
			//Lの最大値を出す
			maxL = Math.max(maxL, L);
		}
		//Lの最大値がLの合計から最大を引いた数より小さければYes
		if(maxL<sum-maxL) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz