using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
using System.Runtime.Intrinsics.Arm;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        var dp = new int[300_001];
        foreach (var ai in a)
        {
            var tmp = dp[1];
            for (var i = 2; i * i <= ai; ++i)
            {
                if (ai % i == 0)
                {
                    tmp = Math.Max(tmp, Math.Max(dp[i], dp[ai / i]));
                }
            }
            dp[ai] = Math.Max(dp[ai], tmp + 1);
        }
        WriteLine(dp.Max());
    }
}