#include<iostream>
using namespace std;
int main()
{
   unsigned int max, n, sum, temp ;
   n = max = sum = 0;
   cin >> n;
   while (n --)
   {
     cin >> temp;
     max = max > temp ? max : temp;
     sum += temp;
   }
   if(sum > 2*max )
     cout << "\nYes" << endl;
   else 
     cout << "\nNo" << endl;
return 0;
}
