#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
int n; cin >> n;
ll sum = 0;
priority_queue<int> pq;
for(int i = 0; i < n; i ++){
int x; cin >> x;
pq.push(x);
sum += x;
}
int mx = pq.top();
if(sum - mx >= mx - 1) cout << "Yes" << ' '; //最多的糖果数量为mx,其他糖果插空分布,当其他糖果数量小于mx-1时,不成立。
else cout << "No" << ' ';
return 0;
}