import java.util.*;
 
public class Main {
    public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
      int n = sc.nextInt();
      int[] l = new int[n];
      int sum = 0;
      for (int i = 0; i < n; i++) {
        l[i] = sc.nextInt();
        sum+=l[i];
      }
      Arrays.sort(l);
      int max = l[l.length - 1];
      sum -= max;
      if (max < sum) {
        System.out.println("Yes");
        System.exit(0);
      }
      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