#include<iostream>
#include<vector>
#include<algorithm>
using  namespace std;

int main()
{
	int n, i;
	vector<int>len;
	cin >> n;
	while (len.size() < n && cin >> i)
		len.push_back(i);
	sort(len.begin(), len.end());
	int sum = 0;
	for (auto c : len)
		sum += c;
	if (sum > * (len.end() - 1) * 2)
		cout << "Yes" << endl;
	else
		cout << "No" << endl;
	return 0;
}