using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class Magatro
{
    
    static void Main()
    {
        int N = int.Parse(Console.ReadLine());
        int[] x = Console.ReadLine().Split(' ').Select(s => int.Parse(s)).ToArray();
        Array.Sort(x);
        int A = x.Max();
        int[] dp = (new int[A+1]).Select(q=>-1).ToArray();
        for(int i = 0; i < N; i++)
        {
            dp[x[i]] = 1;

        }

        for(int i = 1; i <= A; i++)
        {
            if (dp[i] == -1)
            {
                continue;
            }
            for(int j = i + i; j <= A; j += i)
            {
                if (dp[j] != -1)
                {
                    dp[j] = Math.Max(dp[i] + 1, dp[j]);

                    
                }
            }
        }
        Console.Write(dp.Max());

    }

}