#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (int)(n); i ++)
#define irep(i,n) for (int i = (int)(n) - 1;i >= 0;--i)
using namespace std;
using ll = long long;
using PL = pair<ll,ll>;
using P = pair<int,int>;
constexpr int INF = 1000000000;
constexpr long long HINF = 1000000000000000;
constexpr long long MOD = 1000000007;// = 998244353;
constexpr double EPS = 1e-4;
constexpr double PI = 3.14159265358979;

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

    int N; cin >> N;
    vector<int> A(N);
    rep(i,N) cin >> A[i + 1];
    vector<int> imos(N + 1,0);

    bool flag = true;
    irep(i,N + 1) {
        if (i == 0) break;
        A[i] += imos[i];
        if (A[i]%i != 0) {
            flag = false;
            break;
        }
        imos[i - 1] = imos[i] + A[i]/i;
    }
    cout << (flag ? "Yes" : "No") << '\n';
    return 0;
}