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 void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        var res = new int[a[0]];
        var pos = n - 1;
        for (var i = 0; i < res.Length; ++i)
        {
            while (a[pos] <= i) --pos;
            res[i] = pos + 1;
        }
        WriteLine(string.Join(" ", res));
    }
}