#include <bits/stdc++.h>

using namespace std;
	
int dp[300005];

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	int n, t;
	vector <int> v;

	cin >> n;
	for (int i = 0; i < n; i++)
	{
		cin >> t;
		v.push_back(t);
	}

	memset(dp, 0, sizeof(dp));

	for (int i = 0; i < n; i++)
	{
		dp[v[i]] = max(dp[v[i]], 1);
		for (int j = 1; j <= sqrt(v[i]); j++)
		{
			if (v[i] % j == 0)
			{
				//cout << v[i] << ' ' << j << ' ' << v[i] / j << '\n';
				if (j < v[i])
				{
					dp[v[i]] = max(dp[v[i]], dp[j] + 1);
				}
				if ((v[i]/j) < v[i])
				{
					dp[v[i]] = max(dp[v[i]], dp[v[i] / j] + 1);
				}
			}
		}
	}


	int res = 0;

	for (int i = 0; i <= 300000; i++)
	{
		res = max(res, dp[i]);
	}

	cout << res << '\n';

    return 0;
}