#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;

vector<long long> divisor(long long n)
{
	vector<long long> s;

	for (long long i = 1; i*i<= n; i++)
	{
		if (n%i == 0)
		{
			s.push_back(i);

			if (i*i != n)
			{
				s.push_back(n / i);
			}
		}
	}

	sort(s.begin(), s.end());
	return s;
}


int main()
{
	int n, i, x[101010], dp[1010101];

	cin >> n;

	for (i = 1; i <= n; i++)
	{
		cin >> x[i];
	}

	sort(x + 1, x + n + 1);

	for (i = 1; i <= n; i++)
	{
		dp[x[i]] = 1;
	}

	for (i = 1; i <= 1000001; i++)
	{
		if (dp[i])
		{
			auto v = divisor(i);

			for (auto j : v)
			{
				if(j != i)
				{
					dp[i] = max(dp[i], dp[j] + 1);
				}
			}
		}
	}

	int ans = 0;
	for (i = 1; i <= n; i++)
	{
		ans = max(ans, dp[x[i]]);
	}

	cout << ans << endl;
}