#include <bits/stdc++.h>

using namespace std;

int main() {
	int n, m = 0, a, sum = 0;
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		cin >> a;
		m = max(m, a);
		sum += a;
	}
	if (m < sum - m) cout << "Yes";
	else cout << "No";
	return 0;
}
