import java.util.Scanner;
class Main{
public static void main(String args[]){
	Scanner s=new Scanner(System.in);
	int sumOfLeft=0;
	int max=0;
	int side=0;
	int N=s.nextInt();
	for(int i=0;i<N;i++){
		side=s.nextInt();
		sumOfLeft+=side;
		if(max<side) max=side;
	}
	if(sumOfLeft<=(2*max)) System.out.println("No");
	else System.out.println("Yes");
}}
/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