#include <bits/stdc++.h>

using namespace std;

using ll = long long;

constexpr char newl = '\n';

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }

    ll cnt = 0;
    for (int i = n - 1; i >= 0; i--) {
        if ((cnt + a[i]) % (i + 1) != 0) {
            cout << "No\n";
            return 0;
        }
        cnt += (cnt + a[i]) / (i + 1);
    }
    cout << "Yes\n";

    return 0;
}