import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		int[] sides = new int[n];
		int maxp = 0;
		int sum = 0;
		String ans = "Yes";
		for( int i = 0; i < n; i++ ) {
			sides[i] = in.nextInt();
			maxp = Math.max(sides[i], maxp);
			sum += sides[i];
		}
		sum -= maxp;
		if(maxp>=sum) ans = "No";
		System.out.println(ans);
	}
}
/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