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();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        var dp = new int[100001];
        foreach (var ai in a)
        {
            var max = 0;
            foreach (var d in Divs(ai)) max = Math.Max(max, dp[d]);
            dp[ai] = Math.Max(dp[ai], max + 1);
        }
        WriteLine(dp.Max());
    }
    static List<int> Divs(int n)
    {
        var ans = new List<int>();
        for (var i = 1; i * i <= n; ++i)
        {
            if (n % i == 0)
            {
                ans.Add(i);
                if (i * i < n) ans.Add(n / i);
            }
        }
        return ans;
    }
}