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

int main() {
  int n;
  cin >> n;
  int mx = -1;
  int sum = 0;
  while (n--) {
    int x;
    cin >> x;
    sum += x;
    mx = max(mx, x);
  }
  cout << (mx < sum - mx ? "Yes" : "No") << '\n';
  return 0;
}