#include <bits/stdc++.h>
using namespace std;

int main()
{
	int n, sum = 0, Mx = 0;
	cin >> n;
	for(int i = 1, x; i <= n; i++)
	{
		cin >> x;
		sum += x, Mx = max(Mx, x);
	}
	puts(Mx < sum - Mx ? "Yes" : "No");
	return 0;
}
