#include <bits/stdc++.h>
using namespace std;
#define FOR(i, n) for(int i = 0; i < (n); i++)
#define MEM(a, x) memset(a, x, sizeof(a))
#define ALL(a) a.begin(), a.end()
#define UNIQUE(a) a.erase(unique(ALL(a)), a.end())
typedef long long ll;
typedef pair<int, int> P;

int n, dp[1000005];

int main(int argc, char const *argv[]) {
	ios_base::sync_with_stdio(false);
	cin >> n;
	vector<int> x(n);
	FOR(i, n) {
		cin >> x[i];
		dp[x[i]]++;
	}
	sort(ALL(x));
	int ma = 1;
	FOR(i, n) {
		for (int j = 2*x[i]; j <= x.back(); j += x[i]) dp[j] = max(dp[j], dp[x[i]] + 1);
		ma = max(ma, dp[x[i]]);
	}
	cout << ma << endl;
	return 0;
}