#include<iostream>
#include<algorithm>

using namespace std;

int main(){
	int n,x,m,sum;
	m=0;
	sum=0;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>x;
		sum+=x;
		m=max(m,x);
	}
	if(2*m<sum) cout<<"Yes\n";
	else cout<<"No\n";
	return 0;
}
	