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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<ll> a(n + 1);
    for(auto &&v : a) cin >> v;

    ll mx = 0, mn = 0;
    for(int i = 2; i <= n; i++){
        mx += i * a[i];
        mn += a[i];
    }
    mn = mx - 2 * max(0ll, mn - 1);
    cout << (mn <= a[1] && (mx + a[1]) % 2 == 0 ? "Yes" : "No") << '\n'; 
}