#include<iostream>
#include<vector>
//#define N 10000
using namespace std;


int main()
{
    int N = 0;
    int sum = 0;
    cin>>N;
    vector<int> v_len(100,0);
    for(int i = 0; i < N; i++)
    {
        cin>>v_len[i];
    }
    sort(v_len.begin(),v_len.end());
    for(int i = 0; i < N-1; i++)
        sum += v_len[i];
    if(v_len[N] < sum)
        cout<<"Yes";
    else
        cout<<"No";
    return 0;
}
