import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);

		int corner = scanner.nextInt();
		int totalLength = 0;
		int maxSideLength = 0;

		for(int i = 0; i < corner; ++i) {
			int temp = scanner.nextInt();
			maxSideLength = Math.max(maxSideLength, temp);
			totalLength += temp;
		}
		totalLength -= maxSideLength;

		String result = (maxSideLength < totalLength) ? "Yes" : "No";

		System.out.println(result);

		scanner.close();

	}

}
/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