#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const double pi=3.141592653589793;
typedef unsigned long long ull;
typedef long double ldouble;
const ll INF=1e18;
#define rep(i, n) for(ll i = 0; i < (ll)(n); i++)
#define rep2(i, s, n) for (ll i = (s); i < (ll)(n); i++)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

vector<vector<int> > c(2*10e5+1);

void solve(int x, int y) {

}

int main(){
  ll n, sum = 0;
  cin >> n;
  vector<int> a(n+1);
  
  rep(i, n){
    cin >> a[i+1];
  }
  
  for(int i = n; i > 0; i--){
    if((a[i] + sum) % (i) == 0) {
      sum += (a[i] + sum) / i;
    }
    else {
      cout << "No" << endl;
      return 0;
    }
  }
  cout << "Yes" << endl;
  return 0;
}