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

int main(){
    int N, L[11], s = 0; cin >> N;
    for(int i=0;i<N;i++) {cin >> L[i]; s += L[i];}

    if(*max_element(L, L+N)*2<s) cout << "Yes" << endl;
    else cout << "No" << endl;
    return 0;
}