#include <bits/stdc++.h>
using namespace std;
int n,a;
int main()
{
	cin>>n;
	int maxn=0,sum=0;
	for (int i=0;i<n;i++) cin>>a,maxn=max(maxn,a),sum+=a;
	sum-=maxn;
	if (maxn<sum) cout<<"Yes";
	else cout<<"No";
	return 0;
}