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

bool solve() {
    int n; cin >> n;
    vector<int> a(n + 1);
    for(int i = 1; i <= n; ++i) cin >> a[i];
    int t = 0;
    for(int i = n; i >= 2; --i) {
        if((a[i] + t) % i) return false;
        t += (a[i] + t) / i;
    }
    return true;
}

int main() {
    cout << (solve() ? "Yes" : "No") << '\n';
    return 0;
}