#include<iostream>
#include<algorithm>
#include<numeric>
using namespace std;
int main(){
    int n;
    cin>>n;
    int l[n];
    for(int i=0;i<n;i++) cin>>l[i];
    int max=*max_element(l,l+n);
    int sum=accumulate(l,l+n,0);
    sum-=max;
    if(max<sum)
        cout<<"Yes";
    else cout<<"No";
    return 0;
}
