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

int main() {
	int n; cin >> n;
	vector<int> a(n);
	for (int i = 0; i < n; ++i) cin >> a[i];
	ll total = 0;
	bool ok = true;
	for (int i = n-1; i >= 0; --i) {
		if ((a[i] + total) % (i+1) == 0) total += (a[i] + total) / (i+1);
		else {
			ok = false;
			break;
		}
	}
	cout << (ok ? "Yes" : "No") << endl;
	return 0;
}