#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  vector<long long> a(n+1);
  REP (i, n) cin >> a[i+1];

  bool ck = true;
  long long carry = 0;
  for (int i = n; i >= 1; i--) {
    a[i] += carry;
    if (a[i] % i)
      ck = false;
    else
      carry += a[i] / i;
  }

  if (ck)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  
  return 0;
}