#include <bits/stdc++.h>
#define INF 1000000001
#define MOD 1000000007
#define long long long
#define all(x) x.begin(),x.end()
using namespace std;

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

	vector<int> arr(n);
	for(int i = 0; i<n; i++)
		cin >> arr[i];

	long cnt = 0;
	for(int i = n-1; i>=0; i--)
	{
		long v = arr[i]+cnt;

		if(v%(i+1))
		{
			cout << "No\n";
			return 0;
		}
		cnt+=v/(i+1);
	}
	cout << "Yes\n";
	
    return 0;
}