using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        WriteLine(Stone(n, a) ? "Yes" : "No");
    }
    static bool Stone(int n, int[] a)
    {
        var add = 0L;
        for (var i = n - 1; i >= 0; --i)
        {
            if ((a[i] + add) % (i + 1) != 0)
            {
                return false;
            }
            add += (a[i] + add) / (i + 1);
        }
        return true;
    }
}